William McGirt and Robert Garrigus now share the lead at the RBC Canadian Open after a two-shot swing atop the leaderboard.

Scott Piercy, who had a share of the lead, found a hazard off the tee on the 10th hole before eventually making bogey. McGirt, meanwhile, made birdie and a hole later Garrigus did, too.

The result: McGirt and Garrigus now lead by two at 15 under. Piercy is two shots back.

Chris Kirk is another shot back at 12 under, while J.B. Holmes is one of a handful of players at 10 under after a 64.