Mackenzie Hughes of nearby Dundas, Ont., fired a 6-under 64 to rocket 30 spots up the leaderboard into a tie with Skinns and others in the second round of the RBC Canadian Open.
He's at 10-under overall to sit three shots clear of the pack with the afternoon wave starting to play.
First-round leader David Skinns of England had a 1-over 71 round to drop back into a tie for second at 7 under.
WATCH | Canada's Hughes cards 2 eagles, shoots 64 in 2nd round of RBC Canadian Open:
The projected cutline is at even-par 70.
Canadian rock band Our Lady Peace will be performing on the grounds at Hamilton Golf and Country Club after the second round is complete.
Amateurs Jacob Cicoyne of Calgary, Justin Matthews of Little Britain, Ont., and Ashton McCulloch of Kingston, Ont., will also play in the event.
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