Defending champion and top seeded Juan Martin del Potro eased past Portugese Rui Machado 6-1, 6-0 to book his place in the quarter-finals of 2012 Estoril Open.

Del Potro opened the match on strong note and broke Machado early on in the second game for 2-0 lead. He continued to dominate the things in the middle and secured another break at 5-1 before he successfully served out for a set lead in the match.

Match Cast: Del Potro vs Machado

The Argentine continued to roll with the momentum in the second set as well and broke     Machado thrice to wrap the set 6-0 for a straight set victory.

DelPotro will next face Spaniard Albert Montanes, who defeated American Bobby Reynolds in hard fought three sets with 4-6, 6-4, 6-3 scoreline.