KITZBUEHEL, Austria (AP) Gerald Melzer of Austria won 10 of the last 11 games to beat his older brother Jurgen 3-6, 6-3, 6-1 and reach his second career semifinal at the Generali Open on Thursday.

Gerald Melzer plays the fourth-seeded Paolo Lorenzi of Italy for a place in Saturday's final. In the other semifinal, the sixth-seeded Dusan Lajovic of Serbia takes on Nikoloz Basilashvili of Georgia. None of the four semifinalists has won an ATP title before.

Appearing in his first ATP event after a 10-month layoff following shoulder surgery, Jurgen Melzer dominated the opening set but lost control after an hour-long interruption of the match because of rain early in the second set.

''I am happy to be in the semifinals but I'd rather won against a different opponent today,'' said Gerald Melzer, who failed to win a match on ATP level this season coming into the tournament.

Earlier Thursday, Lorenzi missed two match points in the second set before beating Jan-Lennard Struff of Germany 6-2, 6-7 (5), 7-5 and advancing to his third career semifinal.

The 48th-ranked Italian failed to serve out the match at 5-4 in the second set, and missed two more match points on Struff's serve in the final set before converting his fifth chance after more than three hours of play.

''It was a great battle,'' Lorenzi said. ''I had two match points after an hour and 20 minutes but usually I love a good fight so I am happy with this match.''

Earlier, Lajovic defeated Karen Khachanov of Russia 6-3, 6-2 for his second win in 10 career quarterfinals.

Basilashvili reached his maiden semifinal after coming from behind to beat Adam Pavlasek of the Czech Republic 5-7, 7-6 (2), 6-3.