Originally Posted by kiki
What has age to do with % of wins?
We´ll never know what would have happened if Borg had decided to retire later, but we know what Borg achieved while playing and that´s all about to it.
Borg was still very young (25) when he stopped playing so it's probably his lifetime winning percentage would have gone up for a number of years. Probably would have started declining after his early thirties. We also have to take into account he started very young and lost a lot more than he should have (considering his talent) in the beginning. So I think his lifetime winning percentage probably would have ended up to around what it is now, which is perhaps the highest in tennis history. It's actually higher than what the ATP has officially because they didn't count many tournaments like some WCT tournaments and others.
Incidentally Borg in my opinion is clearly superior to Sampras. He was just a far more dominant player. It is just not close if you look at all the numbers objectively. All Sampras has going for him over Borg is the number 14 and that's in 52 tries. Borg has the number 11 but that was in 27 tries. Borg won 106 tournaments by age 25. Sampras won 64. Borg averaged over a 90% winning percentage for five years. Sampras NEVER did that in one single year.