World number three Bubba Watson said fatigue has got the better of him days after his first PGA Tour title of 2015.
Bubba Watson warned he is primed for a letdown, after his Travelers Championship success on Sunday.
The two-time Masters winner's eighth career PGA Tour title came via a play-off - the sixth time he has gone to extra holes, of which he has won five times.
Watson has played 10 events in 2015, missing the cut just once - at the U.S. Open - and earning four top-10 finishes including his title at TPC River Highlands.
The 36-year-old said he's suffering from burnout, ahead of the Greenbrier Classic starting on Thursday.
"I'm tired, I'm spent," Watson said on Wednesday.
"That much pressure, that much energy spent trying to get into the play-off, trying to stay in the play-off and then trying to produce in the play-off.
"I'm tired and I'm worn out.
"I told my caddie, yesterday we were playing at a different golf course, after three holes I'm like I'm out, I'm done, I just want to go home.
"My wife gave me some rest, the in-law took the kids to the pool.
"So I just sat at my house and just rested a little bit.
"Mentally the energy level is just not there, so hopefully just keep rested, keep drinking fluids and hopefully recovering a little bit."
Watson said he is not making any career re-assessments until he reaches one of his marks - 10 PGA Tour titles.
"No I don't think bigger [goals are required], I haven't got to my first goal yet. When I get to my first goal, yes," he added.
"One of my goals is to win a golf tournament every year. When you do that you don't just say you want to pack it in and go home. You try to win another golf tournament.
"So I haven't reached my 10 wins yet, so my goal isn't reached.
"There's no reason to set another goal if you haven't reached your first goal, that's the way I see it. I'm two away from winning that.
"When I somehow, if it's possible, hold a trophy for the 10th time, then yes I'll change my goals to 15 or 20.
"I'll start stretching it out there, but until I get there I'm not going to add any goals if I haven't reached my first goal."
Watson is paired with Bill Haas and Davis Love III in the first round at TPC Old White.