PGA Tour in Memphis: FedEx St. Jude Championship Sunday live updates, highlights

The final round of the FedEx St. Jude Championship PGA Tour event begins on Sunday morning at TPC Southwind.

J.J. Spaun leads Sepp Straka by one shot after 54 holes, while Cam Smith and Will Zalatoris are two shots behind.

The leaders will tee off in the final pairing at 12:50 p.m.

Follow along with our live updates, stories and highlights from TPC Southwind.

SUNDAY'S TEE TIMES: PGA Tour in Memphis: FedEx St. Jude Championship Sunday tee times

WIN NO. 1?: Can Will Zalatoris break through with first career win at FedEx St. Jude Championship?

PGA Tour in Memphis: FedEx St. Jude Championship Sunday live updates, highlights

LOOKING FOR LIVE SCORES? Check out Golfweek's live PGA Tour leaderboard

Playoff hole No. 3: WOW! Will Zalatoris' tee shot on the par-3 11th wedges between the rough and wall along the water. Will he be able to get a club on it?

Straka's tee shot is in the water!

Straka has about 75 yards from the drop zone and hits his 3rd shot into bunker behind the green. Zalatoris is debating.

Zalatoris is taking a drop! And it's a phenomenal shot from the drop zone to within six feet. Zalatoris holes the bogey putt to win!

What a way to earn win No. 1 on the PGA Tour.

WOW! Watch Sepp Straka hit shot into water, Will Zalatoris flirt with disaster on chaotic third playoff hole

Playoff hole No. 2: Will Zalatoris' tee shot hits the cart path right and is in the pine straw, right of the bunkers on the right side of the hole. Sepp Straka is in the rough left, but gets a fortunate bounce and stays out of the fairway water hazard.

Zalatoris lays up into the fairway. Straka is taking a drop!

Straka lands his 3rd shot to within six feet. Zalatoris hits his 3rd shot to 13 feet.

Zalatoris holes out for par! Now, Straka...and he holes out for par.

Two playoff holes down. Onto the 12th.

Playoff hole No. 1: Will Zalatoris has a lengthy birdie putt on 18 but does well to get it to within a couple feet for par. Sepp Straka holes a testy 6-foot par putt. All square after one hole. It is a sudden-death playoff format. Back to 18th tee.

4:55 p.m.: PLAYOFF! Sepp Straka's approach is to 22 feet, but his birdie putt just slips past. Sepp Straka vs. Will Zalatoris in the playoff.

The playoff will start on the 18th hole.

4:45 p.m.: Will Zalatoris with a clutch par putt to stay tied with Straka atop the lead. Straka is short and right in the rough off the tee on 18.

4:40 p.m.: Sepp Straka's birdie putt just slides by. Will Zalatoris' bunker shot on 18 lands short of the green. He'll need to go up and down for par.

4:35 p.m.: Cam Smith pars the 18th hole for an even-par final round. A tough day for him.

4:30 p.m.: Will Zalatoris two-putts for par on 17. Trey Mullinax's chip is well short and he bogeys 17. Sepp Straka's tee shot on 17 is in the left rough.

4:25 p.m.: Straka two-putts for birdie on 16. Mullinax's tee shot on 17 is well left, and he's hit his second shot well past the hole. Zalatoris' tee shot on 17 is in the rough, but he's in decent shape to at least make par.

4:15 p.m.: Will Zalatoris and Trey Mullinax both have two-putt birdies on 16. Sepp Straka with a good par save on 15.

Current leaderboard: Will Zalatoris at 15-under thru 16. Sepp Straka at 14-under thru 15. Trey Mullinax at 13-under thru 16.

4:05 p.m.: Trey Mullinax lips out a short par putt on the 15th hole to move back to 12-under.

Zalatoris' tee shot on the par-5 16h bounced out of the trees and into the fairway. A very fortunate bounce. Straka has a makeable birdie putt on the 15

3:55 p.m.: Sepp Straka has a similarly good shot at the 14th and misses his short birdie putt. The two are tied at 14-under with four to play. Trey Mullinax does birdie the 14th hole to draw within one shot.

3:45 p.m.: Will Zalatoris hits his tee shot on the difficult par-3 14th hole to within six feet but misses the birdie putt. Missed opportunity.

3:35 p.m.: Nice birdie putt rolled in by Sepp Straka on the 12th hole to draw even with Zalatoris at 14-under.

Trey Mullinax holes out a chip on the 13th hole to save par. Very important to stay within two shots for Mullinax.

3:30 p.m.: Let's summarize the day so far:

Will Zalatoris leads at 14-under. Sepp Straka is at 13-under.

Lucas Glover is in the clubhouse at 12-under, and both Brian Harman and Tony Finau head to the 18th at 12-under. Trey Mullinax is at 12-under thru 12.

3:25 p.m.: J.J. Spaun is really struggling, now back to 9-under and drove his tee shot into the water on the 12th hole.

Tony Finau's birdie attempt on the 17th hole is just to the right. He'll go to the final hole at 12-under, two shots back.

Brian Harman in trouble on the 17th and has a lengthy par putt just on the green. The uphill putt goes long and right of the hole. He'll also be at 12-under heading to the 18th.

3:15 p.m.: Can't fault Lucas Glover for giving his long birdie putt a go on the 18th hole green. But it slides well past, and he'll have to stomach a three-putt bogey on the final hole.

Glover is now at 12-under par, two shots behind Will Zalatoris, whose tee shot on hole No. 12 is well right. Sepp Straka birdied the 10th hole and is one shot back at 13-under. Brian Harman birded the par-5 16th and is a shot behind Zalatoris.

2:35 p.m.: J.J. Spaun bogeys No. 7 like Zalatoris. Brian Harman birdies the 13th hole to draw even with Zalatoris but has a tricky bunker shot on hole No. 14. Jon Rahm, by the way, is at 11-under. He's on the last hole, but a good effort from the Spaniard.

2:20 p.m.: First mistake of the day leads Will Zalatoris to bogey hole No. 7. Zalatoris and Spaun now tied for the lead at 13-under.

Adam Scott is on the 18th hole at 12-under after a 5-under round thru 17. Brian Harman's back-to-back birdies on hole Nos. 10 and 11 push him to 12-under.

1:40 p.m.: Will Zalatoris has birdies on Hole Nos. 1, 2 and 3 and now leads by two shots at 14-under. J.J. Spaun and Sepp Straka both bogey the par-5 3rd hole.

BREAKING: Cameron Smith penalized two strokes for improper ball placement in Saturday's round

11:50 a.m.: A final round with a tight leaderboard promises to be eventful. Denny McCarthy is already putting his best foot forward by recording birdies on his first three holes. He's 11-under.

There will be a lot of talk about the FedEx Cup playoffs cutoff of 70 following the day's play. Lee Hodges is making his best push, going 5-under thru 15 holes and 9-under for the tournament. He'll probably need another birdie or two to secure his spot in next week's BMW Championship. Hodges is currently tied for 9th but certain to slip lower as the leaders take to the course.

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This article originally appeared on Memphis Commercial Appeal: PGA Tour Memphis: FedEx St. Jude Championship final round updates