Rory McIlroy refused to blame a change of putting technique after finishing day one of the first World Golf Championship of the season five shots off the pace.
McIroy, 26, finished the first round of the WGC-Cadillac with a one-under par 71 using his new cross-handed grip.
Scott Piercy of the United States and Australia’s Marcus Fraser share the lead after hitting 66 at Trump Doral.
“I was leaving a lot of putts short but that’s to be expected,” McIlroy said.
“It’s the first day competitively with a bit of a new grip. But I felt like it was pretty good,” the Northern Irishman added.
McIlroy changed his putting method after missing the cut at last week’s Honda Classic and is now putting with his left hand below the right on the grip.