The MLS Fan XI were announced today during half time of today's game against the Chicago Fire. Ten players were named, the last will be the player who has the most goals scored for them in FIFA 13. Claudio Bieler is KC's representative in that vote.
But in the other 10, Sporting KC had 3 players named to the roster. Defenders Matt Besler and Aurelien Collin, and midfielder, Graham Zusi were among the 10 players named.
That doesn't mean they'll be on the game day roster on the 31st against Roma (although with Peter Vermes coaching the team I doubt they sit). Vermes will name the roster for the game, but those three have all been voted in by the fans.