Naomi Osaka retires in first-round match against Kanepi at National Bank Open
TORONTO — Naomi Osaka retired from her opening match with a back injury Tuesday at the National Bank Open.
Osaka was losing 7-6 (4), 3-0 against Estonia’s Kaia Kanepi when she withdrew from the match.
Entering the tournament, Osaka had been eliminated from her last three competitions in the first or second round, including a straight-sets loss to Coco Gauff at last week’s Mubadala Silicon Valley Classic.
That was her first competition since the French Open as she recovered from an Achilles injury.