- Game-by-game updates from London’s O2 Arena
- Nadal into last four after overpowering Tsitsipas
- Email Tumaini or tweet @tumcarayol
3.26pm GMT
Novak Djokovic 6-3 4-4* Alexander Zverev
Under yet more pressure at 30-30 and second serve, Djokovic threw in a backhand drop shot. Although that shot has failed him so often in recent weeks, this time he got away with it as it forced an error from a scrambling Zverev. At 40-30, Djokovic landed an easy unreturned serve to hold.
3.22pm GMT
Zverev’s average backhand speed:
Set 1: 74mph
