ESTORIL, Portugal, May 4 (UPI) -- Defending champion Juan Martin del Potro and the three other top seeds all had straight-set victories Friday in the quarterfinals of the Estoril Open.
Del Potro, the No. 1 seed this week, raced past seventh-seeded Albert Montanes 6-2, 6-2. He did lose his serve once in each set but easily countered that with six breaks over the eight games Montanes served.