Serra replaces Nalbandian as del Potro’s opponent

”Lucky loser” Florent Serra will face 2009 U.S. Open champion

Juan Martin del Potro in the tournament’s first round after David

Nalbandian withdrew.

Nalbandian pulled out Tuesday because of a strained muscle in

his chest, and the U.S. Tennis Association determined his

replacement Wednesday morning, several hours before the match.

Serra, a 116th-ranked Frenchman, lost to American Bradley Klahn

in the third round of qualifying.

Del Potro is seeded seventh.

Nalbandian was also scheduled to play doubles with Eduardo

Schwank, and they will be replaced by Brazilians Thomaz Bellucci

and Joao Souza.