The Nottinghamshire, England native is a half dozen strokes off the lead but doesn't feel he should be counted out of the chase.
Westwood told the Associated Press, "A major championship will be a lot more pressure, but I think one-under is by no means out of it."
He has a right to feel optimistic. He started his round on Saturday after shooting a 68 on Friday.
Though Westwood feels he is still in contention, there is one area of his game that he needs to focus on: his putting.
Westwood's putting really let him down on Saturday. He had plenty of misreads which kept him from capitalizing on opportunities.
Westwood has had plenty of close putts, but they just have not been falling for him. It's really been the case for him all year and he seems a little perplexed by it.
It has not been a bad year for Westwood, though.
In May, he won the Ballantines Championship on the European Tour and he tied for third at this year's U.S. Open.
It's true, the Atlanta Athletic Club's golf course has been showing all of its teeth this week and devouring players on a daily basis.
That being said, there has to be something said about the experienced tour player; one who has played in multiple majors and knows what a final round on a Sunday is really all about.
The new kids may be on top of the leaderboard at the end of the day Saturday, but don't count out the experience and determination of Westwood.