Derek Phillips is an American actor. He is perhaps best known for his role as Billy Riggins in the NBC sitcom Friday Night Lights and Travis Murphy in the Netflix series Longmire. He also played Bobby Bragan in the 2013 biographical drama 42. For Disney, he voiced Wyatt in the Doc McStuffins episode "The Search for Squibbles" and played Agent O'Brien in ABC's Agents of S.H.I.E.L.D.. He also guest-starred in other ABC shows such as Grey's Anatomy, Body of Proof and Castle.