On Wimbledon Centre Court tomorrow, Serena Williams will be going for something that has now been dubbed the 'Serena Slam' - holding all of tennis' majors at once.
She has completed that feat once before in 2003, but it seems like her latest attempt at total domination of the Women's game was inspired by her upcoming opponent Gabriñe Muguruza, after this defeat at the 2014 French Open:
G. Muguruza v. S. Williams 2014 French Open Women's R2 Highlights
Williams has only taken on the Spaniard three times, with that Second Round loss at Roland Garros the only reverse she has suffered in their head-to-head so far.
Both of Williams' victories came at the Australian Open, in 2013 and 2015.
But how do they compare when it comes to their vital stats?
There is a 12 year age gap between the two right-handers with Muguruza just 21, and well over a decade of a difference between their lengths of time on the WTA Tour. Muguruza only turned pro in 2012.
But physically, it is the Venezuelan-born challenger, who at 6 foot, holds a three inch height advantage over Williams and also weighs in 3KG heavier.
It may not be enough for Muguruza but Williams will likely have that 2014 defeat somewhere at the back of her mind, whether she uses it as a strength or a weakness.
We'll have updates of their encounter on Off The Ball tomorrow and will also speak to Grantland.com's Louisa Thomas.
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