Any time you do something Roger Federer did in the past, it is a significant achievement because the Swiss Ace generally did legendary things.
Losing the last ever set played at Wimbledon 0-6 is probably not one of them, but there are plenty of other legendary things he did in his career. One of those happened about 20 years ago at the ATP Finals.
He won that event by beating Andre Agassi, but just getting to the final was huge. He was 22 at that time, so he was younger than 23, and since then, no player younger than 23 has ever made the ATP Finals without losing a match.
Well, until this Saturday when Jannik Sinner outlasted Daniil Medvedev in a pretty crazy match that went to three sets. By winning that match, Sinner equaled something Roger Federer did 20 years ago, and it's quite legendary.
You want achievements like his because they indicate a pretty great career for a player. With the run in Turin, Sinner only stabilized his position in the Top 5, getting closer and closer to Medvedev, who is number 3.
He will also have a chance to win the biggest trophy of his career if he beats Novak Djokovic in the final. If he does, he'll win the event undefeated, which again hasn't been done by a player younger than 23 since 2003 when Federer did it.
We've had plenty of amazing players since then, so it just shows how great of an achievement it truly is. Sinner is made for legendary stuff that's undeniable.
It took him a while to fully unleash, but he's done it this year and will only look better and better with time. He'll equal many more great achievements, so let's all sit back and enjoy the shows. It's going to be a great one for many years.