Thornton has consistently produced highlights with quarterback Patrick Mahomes while running routes along the sideline. Thornton's rise up the depth chart -- he was featured with the first-team offense throughout Wednesday's practice -- means he could have a rotational role in September.

Chiefs superstar quarterback Patrick Mahomes explains how he must step up after falling below his usual standard last season

When you win three Super Bowl MVP awards, losing the big one is a bitter pill. For Kansas City Chiefs quarterback Patrick Mahomes, remnants of his team's lackluster performance against the Philadelphia Eagles lingers.