Five golfers stormed up the leaderboard to join Sahith Theegala in a six-way tie for first after one round of the RBC Canadian Open.
Theegala fired a 6-under 64 during the morning wave at TPC Toronto to take the first-round clubhouse lead, and then Emilliano Grillo, Eric Cole, Brooks Koepka, Sam Burns and Matthew Anderson of Mississauga, Ont., matched that performance in the afternoon.
Adam Svensson of Surrey, B.C., was in a nine-way tie for second, a shot back of the leaders.
A heavy rainfall around 10 a.m. local time softened the North Course, but birdies remained gettable as the temperature rose in the afternoon.
Reigning champion Ryan Fox of New Zealand shot a 4-under 66 to sit in a tie for 15th.
Fox was in the day's marquee group with Nick Taylor of Abbotsford, B.C., who won the national men's golf championship in 2023. Taylor was 3 under.
