Finals Weekend began with the doubles final on Saturday, Cara Black and Marina Erakovic included.
Black and Erakovic weren't able to make it against Anastasia Pavlyuchenkova and Lucie Safarova.
Pavlyuchenkova and Safarova held their Mutua Madrid Open doubles trophies up after their 62 64 win.
The singles final took place on Sunday afternoon, with Maria Sharapova taking on Serena Williams.
Williams took control of the points early and often with her big serves and sharp returning skills.
Sharapova had her chances leading 3-1 in the second set, but Williams ended up cruising, 61 64.
Williams improved to 13-2 lifetime against Sharapova and has won their last 12 meetings in a row.
Williams is also 3-0 against Sharapova on clay now - one on green, one on blue, and now one on red.
With the victory, Williams won her 50th WTA title, the 10th player all-time to cross that milestone.
Sharapova has 29 WTA titles to her name, only trailing the Williams sisters among active players.
Williams' dog came onto the court for the celebrations - which famous player is he named after?
Fittingly, the dog is named after the player who won the men's title at the Mutua Madrid Open...
Christopher 'Chip' Rafael Nadal - who is generally referred to as just Chip - with a tuxedo on.
The rest of Williams' team came out to the court as well, including her coach, Patrick Mouratoglou.
Williams also held onto the No.1 ranking with the win - and she was No.1 in their hearts, too.