Former World No. 4 Kei Nishikori returned to winning form after a five-month injury layoff to beat American Mackenzie McDonald in the final of the RBC Tennis Championships, an ATP Challenger Tour event in Dallas.The 28-year-old, who dropped to No. 27 after his injury last August, won 6-1, 6-4 against No. 158 McDonald and took home $18,000 in prize money."I'm happy to win and be done," Nishikori said. "There were moments that were a little stiff, but I also feel like I came back to the game.""I made it through a few tough matches. It was a good experience."He was granted a wildcard for the J…READ FULL ARTICLE
