Rory McIlroy gets up to speed
Rory McIlroy admitted he was still adjusting to the fast greens at the Deutsche Bank Championship after shooting an opening round 70 in Boston.
The world number one said that he was still finding his feet after his recent injury lay-off and completed his round in one under par.
McIlroy balanced out two bogeys with two birdies on the front nine before finishing the round with birdies at 16 and 18, but admitted he was taken aback by the greens.
"These greens are probably the fastest I have putted on in a while," he said.
"The greens in Whistling aren't too quick and, before that, I wouldn't call them greens at Chambers Bay.
"These were a bit of an adjustment. I was hitting the ball a little too hard at times and misreading.
"I hit a lot of good putts today that didn't go in and that was probably to do with the speed."
The 26-year-old says he is feeling comfortable after his time on the sidelines from an injury picked up during a game of football with friends.
"I took quite a lot of positives from the PGA a couple of weeks ago," added McIlroy who believes he will be in contention in what is his fifth appearance at the tournament.
"I've kept going here, I felt I hit the ball very well.
"It was still a solid score in these conditions and I don't think I'll be too far behind at the end of the day."
Luke Donald and American Colt Knost set the early clubhouse lead on four under. Aussie ace Jason Day, who won his first major title with a record score of 20 under par at the US PGA Championship last month, was only a shot behind on three under.
Meanwhile, Michael Hoey is just five shots off the lead in the M2M Russian Open after shooting a 66 in the second round.
The Belfast man dropped a shot at the second hole but followed up with six birdies for a five under par total of 137 at halfway.
The leader is Welshman Bradley Dredge who carded his second consecutive 66 to sit on 10 under overall, just ahead of England's Lee Slattery.