Tennis: Kei Nishikori past one wall, up against another at Wimbledon

As he finds himself closing in on a coveted Grand Slam title, Kei Nishikori knows his challenge to reach the last four at Wimbledon will be met with resistance and predicts his opponent will be a "big wall" to get past.Standing between him and the semifinals will be former world No. 1 and triple Wimbledon champion Novak Djokovic, who leads their head-to-head 13-2.In his 4-6, 7-6(5), 7-6(10), 6-1 fourth-round victory over Ernests Gulbis on Monday, Nishikori, who returned from a five-month wrist injury layoff in January, showed that he is finally ready to bring his best tennis to the grass-co…READ FULL ARTICLE