Hassan Ammar / AP

Feliciano Lopez of Spain reacts after he lost a point against Roger Federer of Switzerland during the Emirates Dubai ATP Tennis Championships in Dubai, United Arab Emirates, on Feb. 29.

Marwan Naamani / AFP - Getty Images

Swiss tennis champion Roger Federer smiles to the crowd after beating Spain's Feliciano Lopez during their ATP Dubai Open tennis match in the Gulf emirate on Feb. 29.

DUBAI, United Arab Emirates -- Roger Federer defeated Feliciano Lopez of Spain 7-5, 6-3 on Wednesday to reach the quarterfinals of the Dubai Championships.

Federer broke the 15th-ranked Lopez in the final game to end a tight opening set. The second set was more routine, breaking the Spaniard to lead 5-3 and closing out the match with a volley winner from the net.

-- Associated Press