How Phil Mickelson makes his millions

1 of 8 Robert Beck / SI
Phil Mickelson's sponsors range from Callaway to KPMG.
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Callaway Though details of Mickelson's endorsements are unknown, it is widely believed that Callaway -- his club sponsor -- sends Lefty his largest paycheck. He uses 13 Callaway clubs, a Callaway ball, and a putter by Odyssey, which is owned by Callaway
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Barclays British bank Barclays is also a big sponsor. He wears the bank's logo on his shirt, appears in commercials and plays in Barclay-sponsored tournaments around the globe.
4 of 8 Robert Beck / SI
Rolex Like Tiger Woods, Mickelson endorses Rolex watches. Unlike Tiger, he wears his on the course.
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KPMG Accounting firm KPMG pays for a prominent place in Mickelson's wardrobe: His forehead.
6 of 8 Robert Beck / SI
Exxon Mobil Lefty works with sponsor Exxon Mobil, the world's largest oil and gas company, to promote math and science education.
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Grayhawk Mickelson is a paid spokesman for Grayhawk Golf Club in Scottsdale, Ariz., former home of the Frys.com Open.
8 of 8 John Biever / SI
Amgen/Pfizer The pharmaceutical giant pays Mickelson to endorse Enbrel, a drug used to treat psoriatic arthritis, a condition Mickelson has.