ESPN host Ryen Russillo -- who's appeared on ESPN radio and TV since 2009 -- was arrested in Wyoming for criminal entry ... TMZ Sports has learned.
We know 42-year-old Russillo was taken into custody on Wednesday and is still locked up as of the time of this post, according to officials.
Details surrounding Russillo's arrest are unclear. We're working on it.
Russillo currently has his own show on ESPNews -- "The Ryen Russillo Show" -- but he's obviously not hosting today. Will Kane is filling in and announced he'll be doing so the rest of the week.