CSN hasn't reached a agreement with Cox yet. From the CSN FAQ.
Q: Can I stream the Washington Wizards games?
A: If you are a CSN Mid-Atlantic subscriber via a participating video provider, and you reside in an area where you are able to view Wizards games on the channel, you will be able to access Wizards content made available through CSN Mid-Atlantic’s “TV Everywhere” service after going through an authentication process. Initially, this offering only includes CSN Mid-Atlantic’s Wizards telecasts and pre-and post-game shows, which can be viewed both on csnmidatlantic.com and via the NBC Sports App (subject to NBA restrictions). If your provider has not yet entered into an agreement with CSN Mid-Atlantic to make available TV Everywhere to your provider’s subscribers, you will not be able to authenticate and stream Wizards programming. The TV Everywhere offering is available to all CSN providers, and CSN is working diligently to finalize agreements with its distributors. Please call your participating provider if you are not able to access the TV Everywhere stream of the game.
