Janko Tipsarevic upset in 2nd round
DUESSELDORF, Germany -- Top-seeded Janko Tipsarevic lost in the second round of the Power Horse Cup on Wednesday, falling 7-6 (1), 6-1 to Argentine qualifier Guido Pella.
It's the biggest career win for the 101st-ranked Pella, knocking out the 10th-ranked Serb to reach the ATP World Tour quarterfinals for the first time.
Pella will play seventh-seeded Viktor Troicki of Serbia, who defeated Grega Zemlja of Slovenia 6-3, 7-6 (3).
Third-seeded Juan Monaco of Argentina topped Andre ...
Read full story