zvelf
Hall of Fame

Here are three tables showing the head-to-head win-loss records of the Big 3, Thiem, and Next Gen players. The top table shows all head-to-head records. Nadal, Djokovic, and Thiem fare the best and all three are within 3% of each other.
The middle table excludes the Big 3’s head-to-head against one another so you can see how the Big 3 fared against the rest without their numbers against 2 of the other greatest players ever. Surprisingly the rankings don’t change at all although Nadal and Djokovic’s winning percentages go way up without their losses to Federer. Federer though, already with losing records against the other Big 3, only improves by 1.7%, meaning against Thiem and the Next Gen, he has performed only very slightly worse than against Nadal and Djokovic combined. This isn’t really a slight on Federer. He was around 36-37 when playing many of these matches. Once Nadal and Djokovic hit 36-37, you can expect them to be losing more than half their matches against the best younger players too.
In the third table, once the Big 3 are removed altogether, Thiem and Medvedev’s records against the rest are tops and very close to each other.
Djokovic is the only player who has a winning HTH against every other player here (except Rublev, whom he has not played). Outside of his losing HTH against Djokovic, Nadal can say the same. Rublev is at the bottom by every measure, though ironically his only winning HTHs are against Thiem and Federer (out of only 1 game played).
Aside from Rublev, no one's overall HTH win-loss percentage is actually that bad. Given how much posters on this forum like to exaggerate how good or bad this or that player is, it’s no surprise that these numbers show that the Next Gen’s performance is somewhere in the middle of that.
Other observations?