Dominic Thiem has stormed into the semi-finals of the ATP Finals.
He's become the first player to qualify for the final four after upsetting Novak Djokovic in three sets.
Meanwhile, seven-time Dubai Duty Free Tennis Championships winner Roger Federer returned to winning ways with a straight-sets win over Matteo Berrettini.
That means he'll now take on Djokovic for a spot in the semi-finals.


Kohli to play 2027 World Cup only if he can add value
Romelu Lukaku makes Belgium's World Cup roster
France reveals World Cup roster; Camavinga, Chevalier left off
Punjab crack under pressure to leave IPL playoffs hopes in balance
Mbappe booed on return as Real Madrid beat Oviedo 2-0
