Top seeds Janko Tipsarevic and Juan Monaco both won their semifinal matches on Saturday at the Mercedes Cup tennis event.

The Serbian Tipsarevic took a 6-4, 2-6, 6-4 win over Brazil's Thomaz Bellucci on the red clay at TC Weissenhof. Tipsarevic need a little over two hours to take down Bellucci.

Monaco had his problems on Saturday in a win over Spain's Guillermo Garcia- Lopez. Monaco took the first set, but then dropped the second. He then held a comfortable 5-1 lead in the third before Guillermo Garcia rallied to win four straight games and tie the set. Monaco, though, won the next two to take a 6-3, 3-6, 7-5 victory.

Tipsarevic will go for his first title of 2012 on Sunday and third of his career. Monaco has already won twice on clay this year and will be shooting for his sixth career title.