World number one Andy Murray and sixth-ranked Wimbledon finalist Marin Cilic have withdrawn from next week's ATP Rogers Cup in Montreal, tournament officials said Thursday.
A nagging hip injury will keep Murray from the Canadian hardcourt tuneup for the US Open for the second year in a row after 11 previous consecutive appearances by the 30-year-old Scotsman.
"I am sad to be missing the tournament in Montreal because I have many great memories from my time in Canada," Murray said in a statement. "I am doing everything I can to return as quickly as possible."
Murray, a three-time Canada winner whose most recent title there came in 2015, has not played competitively since a five-set loss to American Sam Querrey in a Wimbledon quarter-final last month.
His absence leaves reigning French Open champion Rafael Nadal, a 15-time Grand Slam winner, and 2017 Australian Open and Wimbledon winner Roger Federer, the holder of a record 19 Grand Slam titles, as the top seeds in Montreal.
Cilic, whose best Canada showing was a 2008 quarter-final run, has a nagging adductor injury and joined Murray and fourth-ranked Stan Wawrinka on the sidelines. Wawrinka pulled out Wednesday with a knee injury.