Correct me if I'm wrong, but don't the networks usually provide the commentary and coverage? Does this mean that Twitter will provide the sportscasters? And d

Correct me if I'm wrong, but don't the networks usually provide the commentary and coverage? Does this mean that Twitter will provide the sportscasters? And does this mean that Twitter gets to sell advertising on the stream (commercial breaks, on-screen ads)? Twitter should be able to do some extremely targeted advertising...