^ I guess every young generation of tennis players have big respect to the big 3 or big 4 that's why most of the time they can't beat them because of that mentality, (I'm not saying it's bad). But Murray's game has deteriorated so much after coming back from the injury that we all know that it's just a matter of time before he retires for good. Of course, it's still not an easy game for Tsitsipas and he shouldn't underestimate Murray in their match.
I dont like hearing it the Big 4 ,because Murray isnt even close with all of the achivements to the Big 3. Yes he won some big titles while they were dominating but he didnt keep winning titles every year like them. Now Murray just plays big tournament with wild cards and always get knockout in the first or second round.