Video: Sturgis among unsung midfield heroes in MLS Armchair Analyst Matt Doyle explores the role of the box-to-box midfielder, including Portland's Will Johnson, Colorado's Nathan Sturgis and LA's Marcelo Sarvas. Agree or disagree with Matt? Let him know on twitter @MLS_Analyst. Have a topic you'd like to see discussed on Between the Lines? Tweet @Dan_Haiek with your suggestion.