The big focus of this year's Laver Cup has been the impending retirement of all-time great Roger Federer. But that has not has been the only noteworthy happening in London.
It has also been a reunion for the 'Big Four' of Federer, Rafael Nadal, Novak Djokovic and Andy Murray. The four superstars have become one of the most iconic quartets in any sport, and they took to the court for a practice session on Thursday at The O2.
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Federer will play his final ATP Tour match on Friday evening alongside friend and rival Nadal, with whom he also played at the Laver Cup in 2017. That year they defeated Team World's Sam Querrey and Jack Sock. This edition, they will play Sock and Frances Tiafoe.
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There were smiles all around as the Big Four enjoyed each other's company the night before the action begins. Besides catching up, they posed for photos on the River Thames. Entering the Laver Cup, the stars have combined for 4,043 tour-level wins.
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Not only have the Big Four done a lot of winning, they have done so on the biggest stages in tennis. Nadal (22), Djokovic (21), Federer (20) and Murray (3) have lifted 66 Grand Slam trophies and 329 tour-level crowns. Although they will not add to that tally this weekend, the friends and rivals will try to send Federer out on a high with a Laver Cup triumph.
Photo Credit: Clive Brunskill/Getty Images for Laver Cup