Ryan Palmer, a native Texan familiar with playing in strong wind, had the best round of the day, a four-under par 68 that jumped him into a tie for third.
After eight top-10 finishes since the start of previous year, Chappell broke through on Sunday. "To birdie 14, 16 and 17 - and felt great about a couple of sweet par saves there on 15 and 18 - I showed a little emotion and showed that it meant something to me". The most notable of that group was Koepka, who posted the clubhouse lead after a closing 65, but Chappell's birdie on the final hole gave him the winning margin and led to an epic post-victory celebration.
Chappell clung to a one-shot lead after Koepka birdied No. 11 with a 23-foot putt and another one at the next hole putting inside seven feet.
"It was pretty irritating out there", Grace said.
"I knew my game was in a good place", said Chappell, who took the week off after Augusta to celebrate the second birthday of his oldest son, Wyatt.
After shooting a 74 on Thursday, Palmer has fired a 68 the past two days showing that he can have the consistency and knowledge to get the win. "I had played some really good rounds of golf". I just couldn't find a rhythm.
Browns have zeroed in on choice with No. 1 draft pick
Two QBs In The Top 10? We do have a pretty good sense, and it is important because we want to plan for us as we move forward. But the likeliest scenario is that the Browns stick with Garrett, leaving the next 31 picks in the draft open for business.
"I didn't start off really well", Wiesberger said. He made me had to do it the right way.
He is tied with Seamus Power, who was two over par after 10 holes of his third round. He also missed an eight-foot birdie putt on the drivable par-4 17th.
CHAMPIONS: Fred Funk and Jeff Sluman teamed to shoot a course-record 10 under to take the opening-round lead in the Legends of Golf in Ridgedale, Mo.
Lahiri had three other bogeys and then had two doubles on his own back nine, at the fifth and ninth holes, after starting from the 10th.
In all, 26 players are within five strokes of the lead heading into the final round, for which weather conditions are expected to mitigate.
Wiesberger's 71 featured par saves on the 12th and 17th and almost hit the pin with his approach to the last hole but was forced to settle for a par and a trip back up the 18th.