Andy Murray lost in straight sets in the first round of the National Bank Open as British men’s number 1 Cameron Norrie advanced.
Murray, who won the tournament in 2015 after earlier victories in 2009 and 2010, finally started against American Taylor Fritz in Tuesday night’s featured match after being delayed a day earlier by rain in Montreal.
The Scot was overwhelmed by the power of the 10th seed in the first set before hitting back hard in the second, his frustration taking over as he knocked his racket down the court repeatedly.
Fritz ultimately proved too strong, his first 6-1 6-3 win in Canada setting the stage for a second-round encounter against compatriot Frances Tiafoe.
Earlier, Norrie bounced back from losing the Abierto de Tenis Mifel final days earlier with a 6-4 6-4 loss to Brandon Nakashima.
The world number 11 took just an hour and 13 minutes to claim victory and will face Botic van de Zandschulp in the second round.
Jack Draper set up a meeting against Stefanos Tsitsipas with a 6-2 6-3 win over fellow qualifier Hugo Gaston, while Britain’s No.2 Dan Evans dropped a set en route to a win over Filip Krajinovic.
Evans will now face Russian Andrey Rublev, who had a first-round bye.