After an exciting week in the group stages, Saturday saw the semi-finals take place with both Novak Djokovic and Andy Murray in action.
Both men came through the Round Robin phase unbeaten as they look to end the year as world No. 1.
In their paths stood Kei Nishikori and Milos Raonic and it was expected to be a cracking day of tennis.
Murray broke his own tournament record for the longest match to get past Raonic 5-7 7-6 (7-5) 7-6 (11-9) in 3 hours and 38 minutes.
Meanwhile, Djokovic beat Nishikori in straight sets.
Djokovic was clinical against Nishikori and eased to a 6-1 6-1 win.
It took little over an hour to get the job done and it was a stark contrast to Murray’s marathon match.
If he’s in that kind of form against Murray tomorrow, the Scot could be in big trouble.
Murray and Soares were beaten by Raven Klaasen and Rajeev Ram in straight sets.
Klaasen/Ram put in a ruthless performance to win 6-1 6-4 to end any hopes of two title wins for the Murray family this weekend.
Earlier on semi-finals day Henri Kontinen and John Peers secured their place in Sunday’s final with a 7-6 (7-2) 6-4 win over legendary doubles pairing Bob and Mike Bryan.
The fifth seeds are unbeaten in the event so far and will meet Klaasen/Ram in the final.