Mickelson's driver cracks but stays in play

Turns out Phil Mickelson’s driver might be ok after all, even though he will probably switch to a backup. Mickelson called a rules official in the middle of his round on Thursday and asked that he be allowed to replace his driver, which had a small crack in it. Of course, that request was denied — it was just a crack — and Mickelson kept using the club. Mickelson actually reeled off four birdies