We still don't know how many people actually click the Watch tab on Facebook, but that isn't stopping the social network from signing programming deals at a rapid clip. The latest benefactor of Facebook's billion dollar video fund is a bit surprising. The WWE will air a 12-episode tournament exclusively on Zuckerberg's platform on Tuesday nights starting January 16th. If you're expecting full-on storylines from Monday Night Raw and SmackDown Live just because grapplers from each show are participating, you might be disappointed, though. Instead of a Spandex soap opera, Mixed Match Challenge is a single-elimination mixed tag-team tournament where top prize is a $100,000 donation to the charity of the team's choice.