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Phil Mickelson chases the sunset during the third round of the 2013 U.S. Open at Merion.
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David Cannon/R&A/Getty Images
Claret jug to go: Phil and Amy Mickelson leave Muirfield with the hardware on Sunday evening at the 2013 Open Championship.
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Phil Mickelson smiles at Tiger Woods after Woods won the 2002 U.S. Open Golf Championship at the Black Course of Bethpage State Park in Farmingdale, N.Y., Sunday, June 16, 2002. Woods finished three strokes ahead of Mickelson.
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Phil Mickelson at the 1992 NCAA golf finals. Over the course of his college career, Mickelson won 16 tournaments.
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Phil Mickelson tees off at the 6th within view of spectators in final round at the 2002 U.S. Open at Bethpage Black in Farmingdale, N.Y. The Legend of Phil was born at the 2002 U.S. Open, which he lost to Tiger Woods by three strokes.
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Chris Condon/PGA Tour/Getty Images
Phil Mickelson chips on the 7th green during the final round of the AT&T Pebble Beach National Pro-Am at Pebble Beach Golf Links on February 14, 2010 in Pebble Beach.
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Phil Mickelson plays his famous shot from the pine needles on the 13th hole during the final round of the 2010 Masters Tournament at Augusta National Golf Club on April 11, 2010 in Augusta, Georgia. Mickelson won the tournament after a birdie on 13.
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U.S. Ryder Cup players Tiger Woods, Davis Love III and Phil Mickelson, who all three won matches Sunday, celebrate the team's Ryder Cup victory Sunday, Sept. 26, 1999, at The Country Club in Brookline, Mass.
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San Diego Junior Golf Association
Phil Mickelson with Junior World Champions trophy in 1980 from the archives of San Diego Junior Golf Association.
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The most iconic image of Phil Mickelson is his victory leap after winning the 2004 Masters, his first major.
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Another view of the classic shot. Phil Mickelson celebrates with his caddie Jim MacKay after his birdie to win the Masters by one shot on the 18th green during the final round of the Masters at the Augusta National Golf Club on April 11, 2004, in Augusta, Ga.
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Phil Mickelson with wife Amy and baby at the Sprint International in Colorado in August 1999.
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Payne Stewart hugs Phil Mickelson at 1999 U.S. Open in Pinehurst. Mickelson lost this Open by one stroke, the first of his record six runner-up finishes at the U.S. Open.
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Phil Mickelson walks by the champion's trophy at the end of the U.S. Open golf championship at Shinnecock Hills Golf Club in Southampton, New York, June 20, 2004. Mickelson finished two shots behind winner, South African Retief Goosen, who shot a four-under-par 276.
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Phil Mickelson and Tiger Woods joke around at the 1999 Ryder Cup.
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Phil Mickelson at Pebble Beach on Sunday of the 2010 U.S. Open. Mickelson finished fourth at that Open, which was won by Graeme McDowell.
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Phil Mickelson and wife Amy after Phil won the 2010 Masters. It was an emotional win for the Mickelson, as Amy had been fighting breast cancer the previous year.
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Phil Mickelson has pulled off many daring shots in his career but none was so famous as his second shot from the pinestraw on 13 at the 2010 Masters. Mickelson made birdie on the hole and won the tournament.
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Angel Cabrera puts the green jacket on Phil Mickelson after Mickelson's third Masters win at the 2010 Masters.
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Phil Mickelson and wife Amy arrive on the red carpet for the Ryder Cup Gala dinner prior to the start of the 2008 Ryder Cup September 17, 2008 in Louisville, Kentucky.
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Phil Mickelson walks with caddie Jim McKay alongside of the Pacific Ocean on the fourth hole during the first round of the Buick Invitational at the Torrey Pines Golf Course on January 26, 2006 in La Jolla, California.
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Phil Mickelson hits his shot right-handed out of the bamboo trees on the fourth hole during final round play in the 2012 Masters Golf Tournament at the Augusta National Golf Club in Augusta, Georgia, April 8, 2012. Mickelson made a triple-bogey six on the hole, effectively taking him out of contention and Bubba Watson won the Masters.
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Phil Mickelson plays off the cart path on the 17th green during the first round of the 2007 WGC-Cadillac Championship at the Trump Doral Golf Resort & Spa in Miami, Florida.
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Phil Mickelson, Tiger Woods and Fred Couples share a laugh on the 18th green following completion of the Skins Game on December 1, 2002 at the Landmark Golf Club in Indio, California.
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Phil Mickelson and Tiger Woods are seen on the second tee during the final round of the AT&T Pebble Beach National Pro-Am at Pebble Beach Golf Links on February 12, 2012 in Pebble Beach, California. Mickelson got the best of his rival that day, beating Woods by 11 shots and winning the tournament.
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Phil Mickelson has always claimed that the more famous front-on shot of his 2004 Masters victory leap caught him coming down and therefore makes it look like he can't jump. Maybe he has a point.
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Phil Mickelson throws a pitch during batting practice with the Toledo Mud Hens, the Triple-A affiliate of the Detroit Tigers, in August 2003.
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Phil Mickelson nearly missing eagle on 15th hole Saturday at the 2010 Masters. The Augusta crowds have embraced Mickelson during his three wins there.
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Phil Mickelson hugs caddie Bones Mackay after winning the 2010 Masters.
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John W. McDonough/SI
Phil Mickelson and his wife Amy at a Rockets-Lakers playoff game at the Staples Center in May 2009.
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Phil Mickelson is hugged by his daughter Sophia during the final round of the 2005 AT&T Pebble Beach National Pro-Am at Pebble Beach Golf Club in Pebble Beach, California on February 13, 2005. Mickelson won the event by four strokes at -19 par.
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Phil Mickelson's first appearance in Sports lllustrated was as one of SI's "Faces in the Crowd" in the June 1, 1987, issue.
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Phil Mickelson hits driver at Riviera in February 1995.
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Phil Mickelson signing autographs for fans at the 1991 Walker Cup in Ireland.
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Phil Mickelson dejected on 18th hole after losing the 2006 U.S. Open with a double bogey on the final hole at Winged Foot.
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Simon Bruty/Sports Illustrated
Fred Couples congratulates Phil Mickelson on the 18th hole of the 2006 Masters, Mickelson's second Masters victory.
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Phil Mickelson greets fans on Saturday at the 2005 PGA Championship at Baltusrol.
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Phil Mickelson and caddie Bones Mackay after a practice round at the 2009 Masters.
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Trophy envy? Phil Mickelson holds his Tour Championship trophy while Tiger Woods has the $10 million FedEx Cup at Atlanta's East Lake in September 2009.
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Mickelson stalks Augusta National on the final day of the 2010 Masters, his third green-jacket win.
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Phil Mickelson greets Wal-Mart shoppers at a back-to-school shopping spree in San Diego in August 2010.
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Phil Mickelson on the first tee at TPC Sawgrass on Sunday at the 2010 Players Championship.
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Phil Mickelson lies in front of his wife Amy and teammate Anthony Kim on the 17th green during the four-ball matches at the 2008 Ryder Cup golf tournament at the Valhalla Golf Club, in Louisville, Ky.
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Phil Mickelson with his army at the 2009 U.S. Open at Long Island's Bethpage Black.
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Phil Mickelson and his wife Amy celebrate after winning the 2008 Ryder Cup golf tournament at the Valhalla Golf Club, in Louisville, Ky.
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Phil Mickelson celebrates with a group of fans after winning the World Golf Championships-CA Championship at the Doral Golf Resort & Spa on March 15, 2009, in Miami, Fla.
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Phil Mickelson and former President George H.W. Bush chat at the 2009 Presidents Cup at Harding Park Golf Club in San Francisco.
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Anthony Kim and Phil Mickelson at the 2009 Presidents Cup at Harding Park Golf Club in San Francisco. Mickelson has had success teaming with younger players in recent Ryder Cups and Presidents Cups.
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A young Phil Mickelson hits balls in his San Diego backyard.
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Phil Mickelson with an emotional Bones Mackay after winning the 2013 British Open.
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Portrait of Phil Mickelson alone during practice in February 1996.
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Big man on campus. Phil Mickelson at Arizona State in March 1991.
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Phil Mickelson at the 1992 NCAA golf finals. Mickelson won the individual national championship three times at Arizona State (1990, '91 amd '93).
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U.S. Amateur champion Phil Mickelson plays the Par-3 Tournament at the 1991 Masters with Ray Floyd and Greg Norman.
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Phil Mickelson at the 1991 Walker Cup in Ireland.
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Phil Mickelson during the Monday finish of the 2005 PGA Championship at Baltusrol, his second major victory.
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Phil Mickelson at Torrey Pines in San Diego for the 2010 Farmers Insurance Open. Torrey Pines was the scene of many of Mickelson's junior golf highlights.
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Phil Mickelson speaks at Augusta National as low amateur at the 1991 Masters.
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A teenage Phil Mickelson with his dad, Phil Mickelson Sr.
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Teeing off into history. Phil Mickelson hits his tee shot on 18 on Sunday at the 2004 Masters.
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EPA/CJ GUNTHER /LANDOV
Phil Mickelson throws out the first pitch before the start of the game between the New York Yankees and the Boston Red Sox at Fenway Park in Boston in September 2011.
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Phil Mickelson victorious with Byron Nelson and trophy after winning tournament on Sunday at TPC Las Colinas in Irving, Texas, on May 12, 1996.
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U.S. Amateur Champion Phil Mickelson practices with Arnold Palmer and Rocco Mediate during practice for the 1991 Masters at the Augusta National Golf Club in Augusta, Georgia on Tuesday, April 10, 1991.
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Phil Mickelson victorious, holding Claret Jug trophy after winning tournament on Sunday at Muirfield in July 2013.
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No shot he won't try. Phil Mickelson hits from Rae's Creek at the 2007 Masters.
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2009 Presidents Cup teammates and frequent Tuesday money match competitors Phil Mickelson and Keegan Bradley at Muirfield Village in October 2013.
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AP Photo/Koji Sasahara
It's always the 1990s in their closets: Kevin Costner and Phil Mickelson at the Suntory Open '96 Pro-Am charity golf tournament at Narashino County Club in Inzai, east of Tokyo, Wednesday, Sept. 4, 1996.
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Phil Mickelson reacts after missing a putt on the 18th hole to at the Ford Championship at Doral in Miami, Florida on March 6, 2005. Tiger Woods defeated Mickelson by one stroke.
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Phil Mickelson and Fred Couples at 2005 Bob Hope Classic.
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Phil Mickelson tees off on 4th hole Sunday at the 2005 PGA Championship at Baltusrol, Mickelson's only win at the fourth major.
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Phil Mickelson walks with his daughter Amanda during the Par-3 Contest at The Masters at the Augusta National Golf Club on April 6, 2005 in Augusta, Ga.
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Phil Mickelson and Fred Couples victorious after both made No. 7 birdie during Sunday play at the 2006 Masters.
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Thanks, mom! Phil Mickelson hugging his mother after winning the 1994 Tournament of Champions at La Costa in Carlsbad, Calif.
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Phil Mickelson at the 2002 Masters. He finished third in 2001, 2002 and 2003 at the Masters before breaking through with his win in 2004.
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Fan-friendly Phil Mickelson signs a few autographs off the 18th green during the practice round of the EMC World Cup at the Vista Vallarta Club de Golf on Dec. 11, 2002, in Puerto Vallarta, Mexico.
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Phil Mickelson looks at his ball in the rough on the 16th hole during the final round of the U.S. Open Golf Championship at the Black Course of Bethpage State Park in Farmingdale, N.Y., Sunday, June 16, 2002. Mickelson, who bogeyed the hole, finished three strokes behind Tiger Woods, who won the championship.
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Matt Kuchar checks Phil Mickelson's watch while waiting their turn to hit on the 15th tee of the Augusta National Golf Club during the final day of practice for the 1998 Masters in Augusta, Ga., Wednesday, April 8, 1998.
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Phil Mickelson comforts a sobbing Hunter Mahan after the United States lost the 2010 Ryder Cup in Wales.
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Before he won the 2013 British Open, Mickelson's best finish at the event was a T2 at the 2011 British Open at Royal St. Georges.
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Lost in the azaleas: Phil Mickelson hits out of the woods on 13th hole at the 2011 Masters.
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Phil Mickelson and Vijay Singh share a laugh before the first round of the 2011 PGA Championship golf tournament at the Atlanta Athletic Club. After a round at the 2005 Masters, Singh confronted Phil Mickelson in the locker room and argued that Phil's metal spikes had roughed up the greens. They reportedly had to be separated by onlookers.
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Phil Mickelson takes batting practice before the MLB American League baseball game between the New York Yankees and the Boston Red Sox at Fenway Park in Boston, Mass., September 1, 2011.
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EPA/GERRY PENNY /LANDOV
Phil Mickelson's caddie Bones Mackay kicks Mickelson's putter after a lucky shot on the 18th green in the first round of the 2011 Open Championship at Royal St. Georges Golf Course.
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Phil Mickelson walks to the stage during the Opening Ceremony for the 39th Ryder Cup at Medinah Country Club on September 27, 2012 in Medinah, Ill.
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Teammates Phil Mickelson and Keegan Bradley provided a spark to the 2012 U.S. Ryder Cup team.
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Ernie Els beat Phil Mickelson at the 1984 World Junior Golf Championship at Torrey Pines, and their rivalry continues to this day.
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Andrew Redington/Getty Images
Phil Mickelson chats with his coach Butch Harmon during a practice round prior to the start of the 111th U.S. Open at Congressional Country Club on June 14, 2011 in Bethesda, Md. Harmon supposedly shared Tiger Woods' secrets with Mickelson when he started coaching Mickelson.
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Tiger Woods and Phil Mickelson and with each other on the ninth hole during their four-ball match at the 2004 Ryder Cup at Oakland Hills Country Club in Bloomfield Township, Mich. Mickelson and Woods went 0-2 in team play and have never been paired together again.
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AP Photo/Chris O'Meara
Phil Mickelson grimaces as he throws a baseball to his caddie in the parking lot Saturday morning March 18, 1995 at the Nestle Invitational Golf Tournament in Orlando, Fla. Mickelson, whose two day total was 2-over-par 146, was waiting to see if he made the cut. He missed it by one stroke.
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A childhood photo of Phil Mickelson with his father in San Diego.
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Anthony Kim and Phil Mickelson in Friday fourballs at the 2008 Ryder Cup at Valhalla in Kentucky.
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The future Mrs. Mickelson, Amy McBride, at Colonial on May, 26, 1994.
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Phil Mickelson and caddie Jim Mackay on the fourth tee at Augusta National, Mickelson's home away from home, at the 2010 Masters.
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Tiger Woods compares wedges with teammate Phil Mickelson on the 3rd hole during the second official practice day of the 2006 Ryder Cup at The K Club on September 20, 2006 in Straffan, Co. Kildare, Ireland.
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Phil Mickelson reacts after making a double bogey on the 17th hole during the final round of the U.S. Open golf championship at Shinnecock Hills Golf Club in Southampton, N.Y., June 20, 2004.
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Jeff Goss/Getty Images
Amanda Mickelson, Bones McKay, Phil Mickelson, Amy Mickelson and Sophia Mickelson pose with the trophy during the Bob Hope Chrysler Classic at PGA West in La Quinta, California.
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Phil Mickelson celebrates winning the 2010 Masters on 18th green at Augusta National Golf Club on April 11, 2010 in Augusta, Georgia.
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Phil Mickelson lines up a putt on Sunday at the 2011 Open Championship at Royal St. Georges.
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Phil Mickelson, who plays golf left-handed, throws a football during a visit to the Buffalo Bills training camp Wednesday, Aug. 13, 2003, at St. John Fisher College in Pittsford, N.Y.
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Phil and Amy Mickelson celebrate Phil's win at the 2005 PGA Championship with their family.