Bodog Beat

The Williams sisters are an unstoppable force in doubles tennis. (AP Images)

Today, the day before they face off for the singles title, the Williams sisters will wake up at the house they're sharing during the tournament and head to the All England Club to play as a pair in the doubles semi-finals, an event they won last year.

The will take on Cara Black and Liezel Huber in one match, while the team of Samantha Stosur and Rennae Stubbs will face Anabel Medina Garrigues and Virginia Ruano Pascual.

The sisters will set aside their rivalry to team up in the women's doubles semi-finals. They have already won three Wimbledon's doubles titles and are the defending champions.

All of the attention will be on Venus and Serena, but will the fact that they are thinking about the singles final affect how they play today?

Great chance for Black and Huber to knock off the defending champs.

Or will Venus and Serena just win everything this weekend?

Get your Wimbledon Odds in the Bodog Sportsbook!