(Reuters) - World number one Jason Day birdied two of his last three holes, despite difficult conditions for scoring, to take a one-stroke lead after Friday's wind-swept second round of the WGC-Bridgestone Invitational in Akron, Ohio. The game's hottest player over the past 12 months with seven tournament wins, Australian Day had a three-putt bogey at the last to card 69 for a four-under total of 136 at Firestone Country Club. Swede David Lingmerth was alone in second after firing a best-of-the-day 67.
