Winner Sinner
Hall of Fame
Head to Head
Medvedev vs Alcaraz= 2-6
Medvedev vs Sinner= 7-8
Medvedev vs Rune= 2-1
Zverev vs Alcaraz= 6-5
Zverev vs Sinner= 4-3
Zverev vs Rune= 3-1
Tsitsipas vs Alcaraz= 0-6
Tsitsipas vs Sinner= 6-3
Tsitsipas vs Rune= 0-4
Total
Big Three Mid-Gen vs. Big Three Next-Gen = 30-37
As you can see Zverev is the only one leading every single h2h.
Medvedev started strong by taming Sinner and holding the pressure of Alcaraz, only to then lose 12 of the last 13 matches played with both, on the other hand he is currently still leading the head to head with Rune.
Tsitsipas instead if against Sinner he maintains a largely positive h2h (which at a certain point was 5-1) against the other two he has an embarrassing 0-10.