Canadian world number four Milos Raonic pulled out of Sunday’s Delray Beach Open final in Florida, handing American Jack Sock the title by walkover on Sunday.
Milos Raonic withdrew due to a hamstring tear in his right leg, an injury he said he had picked up while beating Argentine Juan Martin del Potro in straight sets in a semi-final on Saturday night.
“I didn’t think much of it,” Raonic told the Tennis Channel. “I thought it was just tightness from the match, but this morning I woke up unable to walk properly and did quite extensive treatment with my team.
“We came down to the conclusion that it was a slight tear of the hamstring in my right leg.”
Jack Sock’s second ATP title of the year followed his Auckland Open victory last month.
The 24-year-old American did not drop a set all week. He has an 11-1 record this year and is expected to rise to 18th in the world rankings on Monday.
Thiem takes Rio Open
RIO DE JANEIRO Austrian Dominic Thiem secured his eighth ATP title with a 7-5, 6-4 win over Pablo Carreno Busta in the final of the Rio Open on Sunday.
Second seed Thiem, who became the favourite after top seed Kei Nishikori was knocked out in the first round, did not lose a set the entire tournament.
Thiem, 23, came through at crucial moments in the final, breaking in the final game of both sets after he and Carreno Busta had exchanged an earlier break.
World number eight Thiem retained his perfect career record against the Spaniard, improving to 4-0.
The result prevented Carreno Busta from adding a singles title to the doubles he won with Pablo Cuevas on Saturday.
Tsonga moves up 4 places after Marseille win
Paris Marseille winner Jo-Wilfried Tsonga returned to the world’s top 10 when the ATP rankings were released on Monday. The 31-year-old Frenchman won his third title on the south coast of France on Sunday, beating compatriot Lucas Pouille 6-4, 6-4 in the final. Tsonga moved up four places to seventh, his highest ranking since June last year.