Andy Murray progressed to the second round of an ATP Challenger event in Bordeaux after opponent Kyrian Jacquet retired at the start of the second set.
Murray was leading 7-5 2-0 when Frenchman Jacquet, the world number 219, decided he could not continue.
The Briton was making his comeback from ruptured ankle ligaments suffered at the Miami Open in March.
Despite the disappointment of an early finish, the crowd in Bordeaux treated Murray to a rendition of 'Happy Birthday' at the end of the match on his 37th birthday.
He will play Gregoire Barrere in the next round after the Frenchman beat Spain's Albert Ramos-Vinolas 7-6 6-2.