Andy Murray admitted he felt the pressure as the British number one kept his World Tour Finals hopes alive with victory over Milos Raonic.
Murrray was back in action at the O2 Arena knowing that a defeat would see him eliminated at the group stage having lost his opening clash with Kei Nishikori.
But the 27-year-old ensured he lives to fight another day as he downed Raonic in straight sets, winning 6-3 7-5.
"On Sunday, there wasn't much magic," Murray said afterwards. "Today I came up with some good shots in the right moments. Milos didn't serve as well as he can and that helped.
"I obviously played better tonight. I hit the ball a lot cleaner than I did on Sunday from the beginning of the match, so that was pleasing.
"I was going in knowing that if I lost the match, I was out. It kind of didn't really feel like a round-robin anymore. It was more like a knock-out."
Murray will now face Roger Federer in his final Group B match on Thursday and a victory would see the Scot advance into the semi-finals.
"It will be obviously a very difficult match, but it will be an exciting match," added Murray.
"A good one to be part of. I hope I can play well. We've had some very good matches over the years. I hope on Thursday it will be the same."
© Sportsbeat 2014