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Its fair to say that greatness in athletes is a subjective matter and the parameters to judge it vary from one expert to another. Some consider number of titles as a the yardstick, while others consider being able to master different surfaces as the key. Nevertheless, sustainability and longevity is something that most agree upon.
Its very easy to overlook a player's achievement as newer ones come in and take the top spot even when the player in question is still in the vicinity of another Grand Slam, as Roger Federer proved at Wimbledon.
As we approach the Olympics and the following US Open part of the season, lets look at what the Swiss ace has accomplished and where he ranks in tennis's absolute greats.
Here is a look at the most durable athletes in tennis history.