Phil objects to a loophole by exploiting loophole: A new groove rule in 2010 banned the use of a certain type of grooves in wedge, but a handful of players exploited a loophole that allowed Ping wedges with the grooves in question made prior to 1990. When Mickelson put the Ping wedge in play as well, he became the most high-profile player to enter the fray, and he did it, he said, to prove a point. "I'm very upset with the way the rule came about, the way one man essentially can approve or not approve a golf club based on his own personal decision. This has got to change," he said. Mickelson took the club out of his bag soon after, but not before threatening to put it back in play if the game's governing bodies didn't get their acts together and close the loophole -- which they soon did.