He [Rafael Nadal] didn't convert that but gained the advantage and launched another ripper of a forehand to force the error from Tsitsipas on the volley. (Thurston, E. November 15, 2019, Rafael Nadal digs deep to beat Stefanos Tsitsipas at ATP Finals. Sky UK https://www.skysports.com/tennis/news/12110/11862011/rafael-nadal-digs-deep-to-beat-stefanos-tsitsipas-at-atp-finals accessed August 29, 2020)