It does get a bit tiring from fans today that "Sampras retired young." By the standards of his time he was not young at all(I mean you can look up the ages of the entire top 100 in 2002 - the amount of 30+ players on tour was minuscule compared to today). Sampras was the oldest USO winner since Rosewall!
Its really weird that the big 3 has made it seem like winning majors over 30 is the norm or the fact they did and past greats didn't must mean they must have sucked. No factors like sports medicine improvement is considered a factor at all. I saw an interview with Fritz's trainer, he said every year they are learning so much and that even 5 years ago the knowledge they had is a joke compared to what they know today. Players train smarter, recover better, and can avoid injuries better than ever before.
And re Borg - the ATP forced him into retirement. I mean all the old articles from NY Times, SI, etc are available online. He wanted to keep playing a limited schedule but was not allowed to. And his battle was going on for a while, it didn't come out of nowhere - he was playing less in 1980 and that really pissed off the powers that be. He was told he would have to qualify for Wimbledon if he didn't commit to a certain amount of events in '82 even though he was ranked top 5! (let's think about that happening today, when your ranking decides whether you can play an event or not. You can't just tell a top player, you didn't commit to x number of events so you have to qualify! That's nuts. But tennis back then was sort of nuts(with all the bannings in the 70s for playing WTT etc)
Players like Ashe/Vilas were directly quoted in 1981 saying "what the ATP/Grand Prix are doing is a disgrace, they are forcing our biggest star out of the game." But yeah some Gen Z on TW in 2025 knows more about Borg's situation than his actual peers did.