|ATP Finals 2020|
|Venue: O2 Arena, London Date: 15-22 November|
|Coverage: Watch live on BBC Two, BBC iPlayer, BBC Sport website and mobile app; follow BBC radio and live text commentary online on selected matches|
An error-prone Novak Djokovic was beaten for only the fourth time this year as Daniil Medvedev reached the semi-finals at the ATP Finals.
The Serb hit 24 unforced errors and five double faults in a 6-3 6-3 loss to fourth seed Medvedev in London.
World number one Djokovic can still qualify for the last four if he wins his final round-robin match against Alexander Zverev on Friday.
Zverev earlier boosted his own hopes with victory over Diego Schwartzman.
The German fifth seed overcame a poor second set to claim a 6-3 4-6 6-3 win against the Argentine, who is now unable to reach the knockout stage after Medvedev’s win.
More to follow.