Top-seed Kei Nishikori defeated defending champion Peter Gojowczyk 7-6(4), 6-3 in his opening match of the Moselle Open on Wednesday to book a place in the quarterfinals.Playing for the first time since his semifinal exit at the U.S. Open, Nishikori struggled early against the German and was unable to break his opponent's serve in the first set on the indoor hardcourt at the Arenes de Metz.But after winning the tiebreaker 7-4, he managed to turn the game, breaking Gojowczyk twice in the second set to claim victory in 1 hour, 33 minutes at the ATP World Tour 250 Series event."I had trouble h…READ FULL ARTICLE