Martin Kaymer

Dustin Johnson, Kevin Chappell tied for lead at the Tour Championship

Dustin Johnson, Kevin Chappell tied for lead at the 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, and only a birdie on the final hole at East Lake on Saturday allowed him to shoot a one-under-par 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 10-foot 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 eight-under...

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