A couple of thoughts about today before moving on to tomorrow:
Ruud should be very concerned about losing to Struff today. #100 in the world. Struff is a good player, and dangerous, but Ruud has been on a slide in terms of results, and should have been very happy to get back on the clay. Which is not to say that he doesn't have time to get his legs back on clay, but compare that to Sinner beating Hurcacz in 3. A much more dangerous player.
As to the QFs:
Sinner v. Musetti: H2H 1-0 Sinner on indoor hards. Musetti could have a letdown after his big win, or he could fly with it. Sinner is the more seasoned. I suspect Musetti for the letdown, but I'd be happy with either. Forza, Italia!
Medvedev v. Rune: They've never played each other! Meddy has a lot of recovering to do, but I don't think he'll want to get capped by the kid. Rune is aggressive and will keep Medvedev on his back foot, and he already hates clay. You have to like Rune's chances. (Jelenafan says don't jinx him.)
Rublev v. Struff: Rublev
Tsitsipas v. Fritz: Fritz. He's the on-form one.
Well Ruud only won back to back matches for the first time this year, at the Estoril tournament even though he went onto win the title? he has not had a good year to date and clay is his surface
I feel at this stage of their careers Sinner is the stronger, also mentally, Musetti can be a headcase at times, he hasnt won many matches this year, I am still in shock he has won, though I have 2 Italian men in the QFs at MC, so I am happy.
I wasnt surprised that Struff beat Ruud, after seeing him dismantled De Minaur with ease, he can be a dangerous player when 'on' though he is too hot and cold for me. Rublev to win
The Young Greek who is now looking to go 3 peat at MC plays Fritz, Fritz can be a clutch player, tight match, could go 3 sets, Young Greek for me, clay is a surface he likes, though I wont be surprised if Fritz wins.
Sometimes having a day off, due to a walkover, can go against you, though Meddy is a player that can absorb hard aggressive hitters, his has great defense, though he has to find his serve, which let him down at crucial times in the match against Zverev, I dont think he will get the let from Rune, like he did against Zverev. I am going for Meddy, clay maybe his new best friend