NEW YORK – His match, and his retirement, put off for at least another day, Andy Roddick stepped out of Arthur Ashe Stadium and into the drizzly night, a black jacket’s hood pulled overhead, a bag of ice soothing his right shoulder.

He’ll try to prolong his U.S. Open – and his professional tennis career – today.

Roddick’s fourth-round showdown against another past champion at Flushing Meadows, Juan Martin del Potro of Argentina, was suspended because of rain Tuesday night, with the American leading 1-0 in a first-set tiebreaker.