Women's Tennis: 5 unbreakable records of Serena Williams

#4 Only player to win a Grand Slam in three different decades

Serena Williams with her first Grand Slam crown at the US Open of 1999

Serena Williams' first Grand Slam title came in the year 1999 at the US Open when she was just shy of her 18th birthday. Her latest Grand Slam title came at the 2017 Australian Open at the age of 35. That makes it an 18-year gap between her first Grand Slam title and her latest to date. Three women previously held the record with a 12-year gap. (Chris Evert, Martina Navratilova and Steffi Graf.) What makes this 18-year time span even more special is that Serena Williams is the only player across all Eras to win Grand Slam titles in three different decades (the 1990s, 2000s and 2010s).

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#3 Wins against Number 1 ranked players over the world

Serena Williams with the World Number 1 trophy presented to her at the BNP Paribas WTA Finals: Singapore 2014

This stat exemplifies the longevity that Serena Williams has had in the sport more than any other statistic. Since the WTA rankings were first introduced in 1975, 25 players have been ranked as World Number 1 till date. Of the 25 players to have been ranked Numero Uno, Serena Williams has logged victories against 21 of them. The only four players whom she hasn't logged a win against are the ones who retired even before her career began: Martina Navratilova, Chris Evert, Tracy Austin and Evonne Goolagong Cawley.

Serena has a win-loss record of 166-62 against players who’ve been ranked No. 1. Of the 21 World Number 1 ranked players whom she has beaten, she has a losing record against only Arantxa Sanchez Vicario at 3-4.