ESPN's Marcellus Wiley could succeed Colin Cowherd — again Unknown 00:22 Marcellus Wiley took over for Colin Cowherd on "SportsNation" six years ago. Now, sources tell SN, he's being considered for a role on FS1's "Speak for Yourself," which Cowherd plans to leave. Share this Share on FacebookTweet on TwitterPlus on Google+