Jordan Spieth has completed another nine holes of practice at Oak Hill and says his left wrist feels good enough to play in the PGA Championship, and good enough that he won't rule out his chances of a career grand slam.

That's a big leap from a week ago, when he wasn't sure he could make it to New York.

"I wouldn't play if I didn't think I was in good enough shape to play," he said after playing the front nine with Justin Thomas and Tom Kim on Wednesday.

"I just don't have the reps I'd like to have going into a major. But I'm happy I'm able to play because I surely didn't think that a week ago."

Spieth missed the cut at the Wells Fargo Championship and then withdrew from his hometown AT&T Byron Nelson in the Dallas area because of a wrist injury that required rest.

The timing is not good for the 29-year-old Spieth, and not just because it's a major. The PGA Championship is the only major keeping him from becoming the sixth player to complete the career grand slam.

Tiger Woods was the last player with the career slam in 2000.

Spieth said in a text message on Sunday that he was still 50-50 about playing see how it handled the thick rough framing the fairways at Oak Hill.

That didn't seem to be an issue when he played the back nine on Tuesday, and then had an afternoon start to see the front nine on the eve of the PGA Championship.

He said the shots that can be uncomfortable are "anything I have to flick over, like a high bunker shot or a high flop shot."

The bigger concern might be Oak Hill, which is hosting its seventh major and has long had a reputation for being one of the strongest tests. The rough is thick and makes it difficult to advance shots to the green. The bunkers have been restored to make lips supremely steep.

"There's nothing that separates this from a US Open," Spieth said. "This is a US Open. The fairways are firm, narrow, and the rough is thick. As far as difficulty, it feels like a U.S. Open course. Par is a nice score."

Spieth said he wouldn't be playing if he didn't think he could win.

"It's not fun if you don't think you have a chance to win," he said. "If I felt like I was limited in a way that would affect my chances, then there would be no reason for me to feel like playing. Because then I would do further damage and it wouldn't be worth it."