Ivo Karlovic of Croatia serves the ball to Tomas Berdych of Czech Republic during their quarterfinal match at the Gerry Weber Open ATP tennis tournament in Halle, Germany, Friday, June 19, 2015. (AP Photo/Martin Meissner)
Martin Meissner
June 19, 2015

HALLE, Germany (AP) Ivo Karlovic fired a remarkable 45 aces and upset the third-seeded Tomas Berdych 7-5, 6-7 (8), 6-3 to advance to the Gerry Weber Open semifinals on Friday.

Karlovic made the first break at 5-5 following a Berdych double fault.

The eighth-seeded Croat fought back to level the second set tiebreaker after Berdych missed three set points, but he missed a match point and hit a return into the net for the Czech to take the set.

Karlovic went 3-1 up in the third, held his serve, and finished the match in 2 hours, 12 minutes with yet another ace.

The 27th-ranked Karlovic will next play either Roger Federer or Germany's Florian Mayer.

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