AKRON, Ohio -- Jason Day's plan for the Bridgestone Invitational was to get in the lead as quickly as possible and expand it from there.
He took care of the first part Friday.
With just enough breeze to make the fairways at Firestone seem even tighter, Day relied on his sharp short game and a pair of late birdies for a 1-under 69 that gave him a one-shot lead over David Lingmerth going into the weekend.
What irritated the world's No. 1 player was the way he finished.
Day had a 20-foot birdie putt from the fringe on the final hole, and when his putter bumped up against the collar on the way back, he rapped it too hard and then missed the 6-foot par putt on the way back.