Justin Rose and Bill Haas finished the day tied at the top of the leaderboard following the second round of the Arnold Palmer Invitational in Orlando.
Rose had led at the end of the first round but today he dropped two shots en route to a second-round 70 in contrast to Haas who produced an impressive 66, the pair one ahead of John Huh.
Defending champion Tiger Woods was on course to challenge at the top of the leaderboard but gusty winds down the back nine scuppered his bid with three consecutive bogeys in the final three holes.
Today was also notable for Phil Mickelson's failure to make the cut, the four-time major winner producing an error-strewn 79 including two triple bogies.
So too Brandt Snedeker, whose final two holes - and the end of his tournament - were marked with a double and triple bogey.
Northern Ireland's Graeme McDowell made the cut as he finished two over par after a second round 74.
Rose had shot a 65 in the opening round to finish the day two ahead of Huh with John Rollins and Brad Fritsch a further shot adrift.
Today Rose enjoyed a good start, picking up four shots to head the leaderboard but bogeys at the 14th and 18th pegged him back.
Haas though enjoyed a flawless round with an eagle on the par-five 16th as well as four birdies for a 66.
Huh hit birdies on the fifth and seventh and although he dropped a shot on the 11th he picked up two more on the final three holes to finish with a 69.
Woods initially made an ideal return to the course today with a birdie at the first and an eagle at the sixth.
He picked up two further shots at the 11th and 13th although his hopes of a clean round went with those three consecutive bogeys at the end to finish the day in a three-way tie for seventh.
That was one adrift of Ken Duke, Jimmy Walker and JJ Henry who were tied for third.