Newton completed 4-of-9 passes for 65 yards and led a pair of touchdown drives in the preseason game before exiting late in the second quarter with Carolina (1-1) up 14-6.
Stewart ran for 26 yards on four carries and made a strong case to be the Panthers' goal-line back -- if not their primary ball carrier -- with scoring runs of 3 and 2 yards.
Carolina managed just a yard on its first three possessions before Stewart provided a spark with a 17-yard run. The Panthers scored touchdowns on their next two possessions.
Copyright 2014 by The Associated Press