Del Potro drops another first-rounder

TOKYO, Oct. 4 (UPI) -- No. 6-seeded Feliciano Lopez defeated Juan Martin del Potro in first-round play Monday at the Japan Open in Tokyo.

Lopez rolled to a 6-3, 6-0 win as del Potro won only two points on serve in the second set. Del Porto has played in two matches since starting his comeback from wrist surgery. Last week -- another first-round loss in straight sets -- was his first tournament play since the Australian Open in January.

Lopez won all the games in the second set but had to fight off eight break points to do so.

Dmitry Tursunov pulled an opening day upset, knocking off seventh-seeded Ernests Gulbis 6-3, 6-4 in 74 minutes. Tursunov didn't face a break point and lost only 14 points on serve in 10 games.

Also Monday, Radek Stepanek took two tie-breakers in stopping Alejandro Falla 2-6, 7-6 (7-5), 7-6 (7-5) and Daniel Gimeno-Traver made one service break in each set stand up for a 6-4, 6-4 win over Eduardo Schwank.

World No. 1 Rafael Nadal is the top seed for the Japan Open and No. 10 Andy Roddick is seeded second. They are to have their opening matches Tuesday.