Denmark's Thorbjorn Olesen and PGA Tour rookie Cristobal Del Solar of Chile each posted a 9-under-par 61 to share the first-round lead at the RBC Canadian Open on Thursday in Caledon, Ontario.

Olesen and Del Solar took full advantage of TPC Toronto at Osprey Valley in the venue's PGA Tour debut. They own a one-shot lead over Cameron Champ; Jake Knapp is alone in fourth at 7-under 63.

Del Solar birdied 10 of his first 16 holes to pass Olesen for the outright lead and threaten a score of 59. However, he failed to get up and down from the bunker at the par-4 17th hole and took his only bogey of the day. He missed a 15-foot putt for birdie for the outright lead at No. 18.

"I just want to go and execute each shot," Del Solar said. "I think everyone kind of sometimes gets ahead of itself -- a

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