Tsitsipas vs Murray could be an interesting match. Everybody will cheer for Murray and as it is still early in the tournament, I think he can stand a chance. Tsitsipas is also not so consistent so there might some value on betting on Murray (or a handicap); need to check the odds.
The fight will take place today but I don't agree with you preferring Murray.
I think Tsitsipas will have more advantages and a chance to win because he is a player who is in 5th place, plus he is much younger than Murray.
On clay court Tsitsipas is my favourite and for this tournament he is still one of the favourites.
The winning bet option for Tsitsipas I still think it deserves to win.