Marin Cilic vs. Kei Nishikori is the end of a tennis era.

be crowned on Monday at the 2014 US Open. Croatian Marin Cilic earned a place in the championship match against Japan's Kei Nishikori, after producing a 6-3, 6-4, 6-4 win over five-time US Open champion Roger Federer.

After fighting back from two sets down against Gael Monfils in the quarter-finals, five-time US Open champion Roger Federer takes a perfect FedEx ATP Head2Head record into his semi-final clash with Marin Cilic on Saturday.

An attacking Federer fought off two match points at 4-5 in the fourth set, sparking a surge that saw him reel off nine of the final 11 games. Roaring back from a two-set deficit for the ninth time in his career, Federer defused the explosive Monfils, 4

Exhilarated by the support he got from the New York crowd in his comeback five-set win over Gael Monfils on Thursday night, Roger Federer was positively chomping at the bit to get on court against Marin Cilic for his US 

Gael Monfils took the two first sets and had match point against Roger Federer on Thursday, but the world's third-ranked player fought back and advanced to the U.S. Open semifinals.