Woods: It was tough

Tiger Woods: Work on his short game paid off on Friday

Tiger Woods emphasised how difficult it had been to go round in 71 to earn a share of the halfway lead in the USPGA Championship.

On day when rounds in the 90s tallied more than those in the 60s, the former world number one was delighted to be under par for the day in brutally windy conditions.

"I thought anything even par or better was going to be a good score - that was my goal and I accomplished that," said the American, who is tied with Vijay Singh and Carl Pettersson at the top on -4.

"It was a tough, tough day. The ball is oscillating and the wind is blowing the putter all over the place.

"My short game's been good. I've made a few changes and I've had a pretty good feel for it.

"You can't short-side yourself out there. You've got to leave yourself on the fat side and give yourself some room.

"And then some of these bunkers are not bunkers - they're either hard pan or mud."