Rory McIlroy brought a three-shot lead into the second round at the Memorial, but that evaporated quickly.
Rory McIlroy reacts to his bunker shot on the 18th hole during the first round of the Memorial Tournament.
Joseph Maiorana / USA TODAY Sports
By Zac JacksonFOX Sports Ohio
DUBLIN, Ohio - Rory McIlroy brought a three-shot lead into the second round at the Memorial, but that evaporated quickly.
On a three hole stretch of three double bogeys, to be exact.
Teeing off Friday morning at Muirfield Village Golf Club's No. 10, McIlroy made double bogeys on Nos. 13-15 on his way to a back-nine 43 -- or 11 shots worse than he played the back nine as part of a blazing 63 in the first round.
McIlroy rebounded to shoot 1-under on the front and finish at 78 for the day and -3 for the tournament, good enough to be in the mix and maybe even in contention.
Of greater concern with the U.S. Open two weeks away is a left knee issue McIlroy has been battling since early in his round Thursday, something he called a strained MCL but "just a tweak," something that was "no worry" before Thursday.