Defending champion Jordan Spieth holds the lead at the Masters for the sixth consecutive round after carding a two-over 74 in the second round at Augusta National on Friday.
Spieth struggled on the back nine, making three bogeys, and his group was put on the clock for slow play. At four-under, he leads Rory McIlroy by one stroke heading into the weekend.
"It was a mental test today," said Spieth. "Just really tough conditions for where the pins were located. Its tough, too, to be put on the clock at Amen Corner. Just all in all, the back nine felt a bit rushed. After two rounds, I couldn't ask for much better than leading."
McIlroy, seeking a Masters victory to complete the career grand slam, shot a one-under 71 to move to three-under. He struggled on the front nine with a 37, but rebounded with a 34 on the back nine. McIlroy is in sole possession of second place.
Amateur Bryson DeChambeau, vying to become the first ever amateur to win the green jacket, was three-under through 17 holes, but triple-bogeyed the 18th. He is tied for eighth, four shots off the lead.
World No. 1 Jason Day struggled with the windy conditions, shooting a one-over 73. He is tied for 14th and five shots off the lead.
Rickie Fowler missed the six-over cut after finishing his 36 holes at nine-over. Phil Mickelson also missed the cut following a seven-over 79.