VALENCIA, Spain, Oct. 23 (UPI) -- High seeds Jo-Wilfried Tsonga and Janko Tipsarevic both retired from first-round matches at the Valencia Open in Spain Tuesday due to injuries.
Tsonga, seeded No. 2, had a back issue and the third-seeded Tipsarevic had a right shoulder problem. The injuries are blows to the chances of both players to gain invitations to the ATP World Tour Finals.