Andy Roddick's career as a professional tennis player ended at the Arthur Ashe Stadium in New York this evening.
The match actually started last night. However, rain forced the encounter to be abandoned overnight with Roddick leading 1-0 in a first-set tie-break.
When the duo returned to the court earlier today, Roddick took control of the breaker from the outset. The American eventually went one set up with a 7-1 success.
Another breaker was required to determine a victor in the second set. On this occasion it was Del Potro who gained the upper hand on his way to serving out 7-4.
Del Potro was now in the ascendancy and a double break allowed him to open up a 2-1 lead in terms of sets.
The Argentine's domination continued during the fourth set and as a result the curtain was brought down of Roddick's career with Del Potro serving out 6-4.
Roddick retires as one-time Grand Slam winner, having won at Flushing Meadows in 2003.