Spieth said the extended break before last year's win at Royal Birkdale had not left him undercooked.
"So I believe I can get the work in whether I'm playing or not to get the repetitions ... I don't feel like I have to (add another tournament) but it certainly could help. There is certainly potential for that," said the Texan, who finished tied for 42nd on Sunday.
The three-times major winner said his putting had come good after some recent struggles though his swing alignment needed some work.
"I've got a pretty good gauge on where my own game's at," Spieth told reporters.
"I've just got to be a little more patient and smarter, which is what I've been working on anyways.
"My putting's right on point where it needs to be. It's the best it's been in a couple of years.
"I just need to get my alignment back on the full swing ... but I've got a few weeks off to get back in order."
(Reporting by Andrew Both in Cary, North Carolina; Editing by Peter Rutherford)
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