The final round of a USGA championship brings with it a special intensity and that is certainly the case as the 76th U.S. Women’s Open heads to Sunday at The Olympic Club. One of the most dynamic stars in the women’s game – Lexi Thompson – sits atop the leader board and one stroke back is an up-and-coming teenager from the Philippines.

If history has taught us anything, it’s to expect the unexpected when the chips are on the line. Last year, it was A Lim Kim finishing with three consecutive birdies.  The Olympic Club has served up many great stories the five times it has played host to the U.S. Open. There is no reason to expect any less as its first U.S. Women’s Open comes to a close.

Here are 3 things to look for in Sunday’s final round:

How Far Back is Too Far?

Lexi Thompson, at 7-under-par 206, has a one-stroke lead over Yuka Saso and the next contenders are 2019 U.S. Women’s Open champion Jeongeun Lee6 and 17-year-old amateur Megha Ganne, four strokes back at 210. Shanshan Feng at 211 and Nasa Hataoka along with Megan Khang, both at 212, are the only other players under par.

If Thompson and Saso both stumble, it could let those players, along with two-time U.S. Women’s Open champion Inbee Park at 213, into the fray. But if Thompson and Saso are on their games, it will be a two-woman race.

Olympic’s Historic Finishes

If the track record of The Olympic Club is any indication, the frontrunners should be looking over their shoulders in the final round. In 1955, Ben Hogan was tracked down by Jack Fleck, who caught him and then beat him in an 18-hole playoff. In 1966, Arnold Palmer lost a seven-stroke lead on the back nine to Billy Casper.

And in 2012, the 16th hole did in Jim Furyk – as it did Palmer in 1966 – allowing Webb Simpson to take the championship. This much is certain: The closing stretch at The Olympic Club is a volatile run in which no lead is safe. Whoever is going to win this championship is going to have to hit three of the most difficult tee shots anywhere in the game on consecutive holes.

First-Time Winner?

If Megha Ganne wins, she will become only the second amateur to take the U.S. Women’s Open, after Catherine Lacoste in 1967. Regardless, this championship could likely produce its 13th different winner in the last 13 editions. Of those with any chance to take the title, only Jeongeun Lee6 in 2019 and Inbee Park – who won the U.S. Women’s Open in 2013 and 2008 – already have the champion’s trophy sitting at home.

Lexi Thompson and Shanshan Feng have each taken one major championship, but never a U.S. Women’s Open. For Yuka Saso, a victory would be by far her biggest victory.

The action resumes Sunday on the Lake Course at The Olympic Club. Follow it from 1-3 p.m. EDT on Peacock and from 3-7 p.m. on NBC.

Ron Sirak is a Massachusetts-based freelance writer who frequently contributes to USGA digital channels.