Pittsburgh’s No. 2 QB Maddox doubtful

PITTSBURGH – Pittsburgh Steelers backup quarterback Tommy Maddox strained his right calf in practice and is doubtful for Monday night’s game at San Diego.

The injury means Charlie Batch, who has played only a handful of downs the last three years, is expected to be Ben Roethlisberger’s backup for the first of the Steelers’ three Monday night games.

Jerome Bettis, the No. 5 rusher in NFL history, could play for the first time since injuring a calf during the third of the Steelers’ four exhibition games. He has moved ahead of Duce Staley on the depth chart, partly because Staley hasn’t carried the ball since the playoffs in January.

Staley missed all but one day of training camp for knee surgery and did not get any carries during the one game he has played this season.