Casper Rudd advanced to the semi-finals of the Geneva Open with a 2-6 6-1 6-4 victory over German Dominik Koepfer on Thursday. The third seed followed the trend of the previous two quarterfinals, losing the first set, before dominating in the second to level. He looked on course to win the third easily as well, after breaking Koepfer early. He couldn't find another advantage, but was able to serve out the match.