"It did not come easy to turn the match around. I had to make a lot of sacrifices," stated Tsitsipas.
“Both of us gave an incredible quality of tennis today out there. The intensity was very high for both of us.
“I knew he's not going to give up. He's someone that I respect a lot. Someone I kind of looked up to when I was younger. I knew that things will get eventually difficult for me and I will have to withstand the amount of physicality that he's going to implement into the game.”
Fired up from the very start, former world No.1 Murray was packing plenty of punch into his shots, cajoling the crowd to get involved. Full-throttle tennis was the order.
The 34-year-old appeared on course for a two sets lead after a trademark backhand lob sent him 5-3 clear in the second set tie-break. However, Tsitsipas managed to sneak the vital points in some sublime net exchanges.
Murray, who held a 14-0 US Open first round record, was rolling back the years with his movement, out manoeuvring the Greek youngster to play a polished third set. Surely not?
Into the fourth set and Tsitsipas stepped it up – reaching the level he demonstrated as a Roland-Garros finalist earlier this summer.
“It really got mental and also very psychological at this point,” continued the 23-year-old, up against France’s Adrian Mannarino next.
“It was a game of patience, trying to come up with the best possible solution in moments that you had to think straight and have your mind clear.”