Del Potro advances to 3rd round at Australian Open
The sixth-seeded del Potro had 22 aces and 50 winners Thursday night against the overmatched Becker, who had just one breakpoint chance in the match.
Del Potro last year equaled his best result at the Australian Open by making the quarterfinals, where he lost to Federer.
Copyright 2013 by The Associated Press
This story is from ESPN.com's automated news wire. Wire index
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