Midfielders Benny Feilhaber and Roger Espinoza have a litany of responsibilities every time Sporting Kansas City takes the field. From possession and chance creation to tracking back and disrupting opponents' attacks, both players exert most of their energy from box to box as vital cogs in Peter Vermes' 4-3-3 system.
Hence the term "box-to-box" midfielder, a moniker given to those who contribute valuably on both sides of the ball. Major League Soccer's Audi Player Index ranked the top 10 box-to-box midfielders on Tuesday, and Feilhaber and Espinoza checked in at No. 3 and No.