Felix Auger-Aliassime is out of the Shanghai Masters after suffering a knee injury, forcing the Canadian to retire from his fourth-round match against Norway’s Casper Ruud.
The fifth-ranked Montrealer appeared to injure his knee early in the match. He received treatment before deciding he could not continue. He trailed 5-2 in the opening set when he retired, after just 35 minutes on court.
Ruud through to quarterfinals
Ruud advances to the quarterfinals, where he will face Spain’s Rafael Jodar.
Jodar earned his place in the last eight with a 6-7 (7), 6-4, 6-2 victory over Dutchman Botic van de Zandschulp.