CTIA 2006 -- Mobile ESPN is about to get a big boost, the company just announced an agreement with Sprint that will give the MVNO space in 500 bricks-and-mortar Sprint stores. Mobile ESPN uses the Sprint network, but until now Sprint has refrained from actively marketing an MVNO that it doesn't own a stake in (Boost Mobile for instance).
Currently Mobile ESPN has been available exclusively in BestBuy locations and online.