Yes I agree with this Tsitsipas is a very strong player in the first set, French Open final prove it, but everything can change that because his opponent has enough stamina to turn things around, and also last year's US Open where he also very strong in the early set against Borna Coric also a couple match points but ended in defeat, but this opponent that can change the game should have good stamina.
Over 3.5 sets that I chose, the ML odds on Tsitsipas in this match are very low.