That's quite a good one, actually. I think Zverev has been below his usual standards, and Sinner is rising fast and is still under-rated. Those are decent odds for Sinner to win, in what would not be a huge upset at all.
They have played each other once before on clay, at Roland Garros in 2020... which Sinner won in 4 sets.
Almost mate, Sinner won the first match and then Zverev the second.
It comes down to the third wherein it goes to the tie-break.
So 2/3 for me, won the other two matches as I have bet on the Over points.
Semi-finals, Zverev vs Tsitsipas and then we have Fokina vs Dimitrov. I'll go Under 23.5 on the Zverev vs Tsitsipas and then Over 22.5 between Fokina and Dimitrov.