Watch all the highlights from this opening semi-final at the 2019 Nitto ATP Finals where six-time champion Roger Federer came up against 21-year-old Greek sensation Stefanos Tsitsipas at the O2 Arena in London.
Stefanos Tsitsipas v Roger Federer Highlights
Match Highlights
London
2019SFSF
Watch all the highlights from this opening semi-final at the 2019 Nitto ATP Finals where six-time champion Roger Federer came up against 21-year-old Greek sensation Stefanos Tsitsipas at the O2 Arena in London.
