Paul Casey leads Memorial after second round of 66 . Overnight leader Rory McIlroy fades badly during second round . Bubba Watson finishes day in second position . TL;DR Tiger Woods and Phil Mickelson are tied for the lead at Valhalla Golf Club on Sunday.
Paul Casey leads Memorial after second round of 66 . Overnight leader Rory McIlroy fades badly during second round . Bubba Watson finishes day in second position . Top-ranked Adam Scott still in contention .