Tennis: Nishikori reaches semifinals at Dallas Challenger event

Former world No. 4 Kei Nishikori reached the semifinals of the RBC Tennis Championships in Dallas on Thursday after beating No. 295 Diminik Koepfer.Japan's Nishikori, who dropped to world No. 27 after a five-month injury layoff, defeated Germany's Koepfer 7-6(3), 6-3 in a tough 1 hour, 35 minute match at the ATP Challenger Tour event.The 28-year-old started out in strong shape when he broke his opponent's serve in the third game of the first set, but he gave up the next game. Nishikori bounced back in the second set when he took the first four games, but struggled later on as he handed the …READ FULL ARTICLE