(CNN)Three-time grand slam champion Andy Murray says he "lost respect" for Stefanos Tsitsipas, after the Greek world No. 3 took multiple extended breaks at crucial times during their first round US Open match.
Andy Murray says he 'lost respect' for Stefanos Tsitsipas after US Open defeat
The pair battled it out for more than four-and-a-half hours in a five-set thriller, with Tsitsipas eventually prevailing 2-6 7-6 3-6 6-3 6-4 to advance to the second round at Flushing Meadows.
However, Murray was disappointed with how much time his opponent spent off court; Tsitsipas took two bathroom breaks of longer than seven minutes and also received a medical time out.
"It's just disappointing because I feel it influenced the outcome of the match," Murray told reports after the match. "I'm not saying I necessarily win that match, for sure, but it had influence on what was happening after those breaks.
"I rate him a lot. I think he's a brilliant player. I think he's great for the game, but I have zero time for that stuff at all and I lost respect for him."
Tsitsipas, who didn't break any rules, took lengthy toilet breaks at the end of the second and fourth sets and received a medical time out for an apparent foot injury before the fourth set.
Murray could be heard complaining to chair umpire Nico Helwerth and US Open match supervisor Gerry Armstrong about the amount of time Tsitsipas was taking.
The Scot said he told his team before the match to "expect" that from his opponent "if things weren't going his way" and revealed there have been discussions about changing the rules to prevent those lengthy stoppages from happening.
"Ultimately, they [the officials] can't do anything because the rules are there," Murray said. "But I sit on the player council and we speak about it all of the time, about changing these rules, trying to make it less easy for the rules to be exploited, I guess.
"Some suggestions are if you take a medical timeout or a break before, let's say, my serve, that you forfeit the game. I just start the set one-love up. That's one thing that's sort of been discussed. A couple of other things are, like, you get two five-minute breaks during a match or something -- and that's it. There's various different suggestions that are out there.
"That's what I feel, but if everyone else feels like that's totally cool and there's no issue with it, then maybe I'm the one being unreasonable, but I think it's nonsense -- and he knows it, as well."
Murray was clearly still feeling jovial despite the defeat, tweeting: "Fact of the day. It takes Stefanos Tsitipas twice as long to go the bathroom as it takes Jeff Bazos to fly into space. Interesting."
After the match, Tsitsipas insisted he had done nothing wrong and that he had no hard feelings towards Murray.
"If there's something that he has to tell me, we should speak the two of us to kind of understand what went wrong," he told reporters. "I don't think I broke any rules. I played by the guidelines, how everything is. Yeah, definitely something for both of us to kind of chat about and make sure.