When you think of greatness in athletes, you have to think about the longevity as much as anything. Being dominant once is hard enough, but doing it over a long, sustained period of time is something only the very best can do.
At times, we can get lost in the moment that we don't take a step back to appreciate how great a player is/was/has been throughout their career.
Tennis is a sport that does not lend itself to being great for a long period of time. As the game has evolved, we see more and more upsets because the talent pool is so closely bunched together. There are clear standouts, though they have had small stretches where they did not look like themselves.
Since we are approaching the end of Wimbledon, tennis' signature event, what better time to look back at some of the players who have proven their greatness by having sustainable and durable careers in the sport.
Here is a look at the most durable athletes in tennis history.