Coming off their divisional home win over the Browns, the Ravens flew to Heinz Field for their Week 4 duel with the Pittsburgh Steelers, in their 3rd straight divisional game. Baltimore would trail early as Steelers running back Rashard Mendenhall picked up a 1-yard touchdown run.  The Ravens would take the lead in the second quarter as running back Willis McGahee got a 9-yard touchdown run, followed by kicker Billy Cundiff making a 33-yard field goal.  After a scoreless third quarter, Pittsburgh would get the lead again as Mendenhall made a 7-yard touchdown run in the fourth quarter.  Fortunately, Baltimore was able to go back ahead as quarterback Joe Flacco completed an 18-yard touchdown pass to wide receiver T. J. Houshmandzadeh with 32&#160;seconds remaining in regulation.  Middle linebacker Ray Lewis intercepted Pittsburgh backup quarterback Charlie Batch on the Steelers' final possession to end the game.. How many yards were scored across all rushing touchdowns?