Graeme McDowell vaults into Mexico lead after birdie bonanza

Graeme McDowell made seven birdies in the space of eight holes as he vaulted up the leaderboard to take a one-shot lead after the second round of the OHL Classic at Mayakoba.

McDowell, who started on the back nine, hit three straight birdies before making the turn. He dropped at shot on the first before following up with four more birdies in a ow.