2-way tie in Atlanta

Johnson, Chappell both at 8-under at Tour Championship

Dustin Johnson made one mistake that suddenly put some intrigue into the final day of the PGA Tour season — the Tour Championship and the FedEx Cup.

Johnson clipped a tree trying to get out of the rough on the 17th hole and made double bogey at Atlanta’s East Lake Golf Club, and only a birdie on the final hole Saturday allowed him to shoot a 1-under 69 and regain a share of the lead with Kevin Chappell.

Chappell went from a four-shot deficit on the front nine to a one-shot lead when he made a 10foot birdie putt on the 17th and Johnson made his double bogey. Chappell, still looking for his first PGA Tour victory, shot a 68. They were at 8under 202.

Rory McIlroy and Ryan Moore each had a 66. They were two shots behind, still very much in the game after wondering most of the steamy afternoon if Johnson was going to give anyone a chance.

Johnson still has control of the $10 million bonus for winning the FedEx Cup. He only has to win or finish second alone in the Tour Championship to win the cup.

McIlroy, five shots behind at the start of the third round, would have to win the Tour Championship and have Johnson finish in a two-way tie for second. Moore, besides the tournament title, is in the running for the last captain’s pick for the Ryder Cup.

Hideki Matsuyama had a 68 and was three shots behind. Jason Dufner (66) was four back.

Web.com: Martin Flores birdied five of the last seven holes for a 5-under 66 and a threestroke lead in the Web. com Tour Finals’ Nationwide Children’s Hospital Championship in Columbus, Ohio.

Champions: Scott McCarron eagled the par-5 12th and shot a 5-under 66 to take a two-stroke lead in the Pacific Links Bear Mountain Championship.