Long has gingerly walked off the field after taking a hard hit from San Diego linebacker Tim Dobbins.||||||| Long, promoted from the practice squad before Sunday's game, was injured on Kansas City's first drive of the second half when he took a shot to the head from Dobbins on a crossing route. Long tried to get up, wobbled to the left, then to the right before an official stepped in and got him to take a knee. Kansas City's training staff came out and helped Long to the bench.