Dustin Johnson, Adam Scott and Danny Lee have all opted not to compete at the Tokyo Olympics, and now Lee Westwood has also confirmed his decision not to participate.

Westwood, 48, announced his decision to withdraw from Olympic consideration Tuesday at the PGA Championship.

"I have given notice that I am not going to play in the Olympics," Westwood said.

"I have a few family commitments, and I already proved a few weeks ago that playing seven in eight weeks is not good for me. And there's already a lot of tournaments crammed in around there, Scottish Open, Open Championship. I need a couple of weeks off between there and the FedEx in Memphis. Then there's only another week off and I could be playing three FedExCup events, the PGA, a week off, then the Ryder Cup. I want to be in good shape for all of those. I think going to Japan the week before Memphis, just with all that going on, is a bad idea, especially when I can't say whether I'm in it at the moment anyway."

The No. 21 ranked golfer in the world, Westwood was in position to compete for a trip to Tokyo. Tyrrell Hatton, Matthew Fitzpatrick and Paul Casey are all ahead of him in the World Golf Ranking, but an Olympic berth was well within reach for Westwood.

With Westwood no longer in the running, Tommy Fleetwood's chances of competing in Tokyo have risen considerably. He is currently ranked at No. 28 in the world and is the fourth-highest ranked Englishman, not including Westwood.