Tennis is set to lose two superstars in Serena Williams and Roger Federer
Williams, 40, and Federer, 41, have both announced in short succession their plans to retire, leaving the tennis world without two of its most iconic players.
On New Year's Day 2019, tennis greats Serena Williams and Roger Federer took the court as opponents.
It was an unusual treat for fans of the sport: the two superstars who separately dominated their own fields of women's and men's tennis were facing off against each other in a mixed doubles match.
But any competitive energy Williams and Federer wielded during the match melted away during , when they traded compliments and gleefully shared what it was like to play against the
