ESTORIL, Portugal, May 3 (UPI) -- Defending champion Juan Martin del Potro lost just one game Thursday in posting a second-round win at the Estoril Open tennis tournament in Portugal.
Del Potro had a bye as the event's No. 1 seed and so Thursday marked his first appearance. It was relatively short as he dispatched Rui Machado 6-1, 6-0 in 62 minutes.