Brendan Steele has taken a one-shot lead after the first round of the Canadian Open in Oakville, Ontario.
The American carded a seven-under-par round of 65 to leave Scott Brown, Matt Kuchar and Scott Gardiner in a tie for second place.
Hunter Mahan, who has played in the final group in the last two Majors, is once again challenging at the top of the leaderboard on five-under-par.
Sweden's David Lingmerth is also on five-under, while Bubba Watson is among a nine-strong group of players on four-under.
Further down the field are Charl Schwartzel (+1), Luke Donald (+1) and Graeme McDowell (+4).
