1. (1977) Shake Your Groove Thing
Chaos greeted players at the 1977 PGA at Pebble Beach, when multiple iron sets were declared non-conforming due to grooves that were too large and too close together. Tom Watson, who had already won the Masters and British Open that year with his Ram irons, had to forgo his clubs, as well as his backup set. To tee it up, he borrowed a set of Roger Maltbie’s clubs on Thursday morning.