HAMILTON — Scotland’s Robert MacIntyre shot a 4-under 66 in Saturday’s third round of the RBC Canadian Open to add to his lead.

MacIntyre started the day tied with New Zealand’s Ryan Fox two shots ahead of the pack.

But Fox had an even-par 70 to drop back into second at 10 under as MacIntyre surged to a 14-under total.

Mackenzie Hughes of Dundas, Ont., just eight kilometres from Hamilton Golf and Country Club, shot a 3-under 67 to sit in a tie with Fox and American Ben Griffin.