Rafael Nadal secured his second title of the year as he trounced his Serbian opponent Viktor Troicki in straight sets on Sunday to clinch the Mercedes Cup title in Stuttgart.

The Spaniard fired 11 aces as he overcame Troicki 7-6 (7/3), 6-3 in a match that lasted one hour and 26 minutes.

Nadal, the 14-time Grand Slam champion, also became the first man to win clay and grass titles in Stuttgart.