US Open: Djokovic Advances To Third Round After Laslo Djere Retires Injured - In Pics

Novak Djokovic, of Serbia, serves to Laslo Djere, of Serbia, during a second round match of the U.S. Open tennis championships in New York.

Laslo Djere, of Serbia, is examined during a second round match against Novak Djokovic, of Serbia, of the U.S. Open tennis championships in New York.

Novak Djokovic, of Serbia, returns a shot to Laslo Djere, of Serbia, during a second round match of the U.S. Open tennis championships in New York.

Laslo Djere, of Serbia, returns a shot to Novak Djokovic, of Serbia, during a second round match of the U.S. Open tennis championships in New York.

Novak Djokovic, of Serbia, puts a towel around his neck during a second round match against Laslo Djere, of Serbia, of the U.S. Open tennis championships in New York.

Laslo Djere, of Serbia, reacts against Novak Djokovic, of Serbia, during a second round match of the U.S. Open tennis championships in New York.

Novak Djokovic, of Serbia, returns a shot to Laslo Djere, of Serbia, during a second round match of the U.S. Open tennis championships in New York.

Laslo Djere, of Serbia, returns a shot to Novak Djokovic, of Serbia, during a second round match of the U.S. Open tennis championships in New York.