Jimmy Walker has two-shot lead in Akron, with Rory McIlroy also in contention

Jimmy Walker fired a second round 65 to move to the top of the leaderboard in the WGC-Bridgestone Invitational in Akron.

The 2016 USPGA champion - who revealed earlier this year that he had been diagnosed with Lyme Disease, a bacterial infection spread to humans by infected ticks - carded six birdies and a bogey for a five under par round.