Morgan Riddle has gone from Wimbledon star to 'World's Best Ex-Girlfriend' after Taylor Fritz split

The couple's run at the top of the sport, him a top tennis star and her the top WAG in the game, has ended after almost six years together, according to People.

Now, Riddle has given herself the title of "World's Best Ex Girlfriend" in an Instagram post that includes, among other breakup clues, her wearing a t-shirt with those words on it.

Another told them that "the split was mutual."

Pour one out for tennis. Let's be honest here, Fritz and Riddle are going to be fine, but who is going to pick up the slack for the sport following her departure?

Is there someone out there ready to fill her shoes? Does Fritz end up with another lady who refuses to stay head down in the box? Does Riddle fall for another tennis player?

It could be a big summer for someone who wants to step up for tennis.