The second semi-final of the day in Washington served up a top-10 clash when Kei Nishikori and Alex Zverev met for a place in Sunday's Citi Open showpiece.
Alexander Zverev v Kei Nishikori
Replay
Washington
2017SFSF
The second semi-final of the day in Washington served up a top-10 clash when Kei Nishikori and Alex Zverev met for a place in Sunday's Citi Open showpiece.
