Woods rearranged his schedule and said he would join his teammates Sunday night on a charter flight to Ireland, where Lehman has arranged for them to play The K Club in advance of the Ryder Cup matches on Sept. 22-24.
Woods and Phil Mickelson had been questionable because of commitment. The Deutsche Bank Championship is next week outside Boston, and it benefits the Tiger Woods Foundation. He had a dinner on Tuesday related to the foundation.
'We're all going together,' Woods said. 'We're going there as a team and going there just to hang out and relax and play a little golf.'
Mickelson spoke briefly as he left Firestone on Thursday after a 74, although he said he planned to go.
Woods knows the Palmer Course at The K Club as well as anyone, having stayed there during previous trips to Ireland before the British Open. And the plane trip might give him a chance to meet Ryder Cup rookie Brett Wetterich.
Wetterich said Tuesday had never met the world's No. 1 player.
'I haven't seen him this week,' Woods said.
Mark Calcavecchia knew it was going to be a long day on his way to the course, when he felt immense pain in left shoulder area that was spreading across his pectoral muscles and even into his ear.
He thought about withdrawing, stuck it out and shot 75. How long he lasts remains to be seen.
'I know pain. I generally can handle pain,' Calcavecchia said. 'This nearly brought me to tears four times today.'
Calcavecchia said he would try to play again on Friday, but said it was doubtful he would make it all four days at Firestone. He said he planned to get an MRI next week, and hoped to go to the Canadian Open on Sept. 7-10 to defend his title.
'The best I can do is beat five to 10 guys,' he said. 'Where's the fun in that?'
To get through the night and possible the second round, Calcavecchia said he would take a pain killer, even if it affected his golf.
'I don't care if I'm dizzy or not,' he said. 'As long as I'm not hurting.'
Tiger Woods celebrated his victory in the PGA Championship by flying to Houston to pick up a dog for his wife.
Elin Woods bought her husband border collie named Taz for Christmas. Woods got his wife a Labradoodle, a special breed of Labrador and poodle that they named Yogi.
He then spent his next two days not getting much sleep and picking up after the puppy.
'We have a puppy that's leaving a couple of new things around the house, so I had to take care of that,' he said.
Stuart Appleby opened with a 76, but he kept alive one streak that even Tiger Woods can't top. Appleby is the only player to compete in every World Golf Championship that counts toward official money. ... Tim Herron holed out a pitching wedge from 111 yards for eagle on No. 3, while Tim Clark holed out a 4-iron from 193 yards for eagle on No. 14. ... Lee Westwood didn't help his chances to make the European Ryder Cup team by opening with a 79.