Quarterback Andy Dalton suffered a neck injury Saturday night, apparently when he converted a fourth-and-one from the half-yard line to give the Bengals a 7-0 lead over the Bears with 4:17 left in the first quarter.
Dalton had been expected to play the first half with the first offense, but AJ McCarron took over on the second drive with 14:47 left in the half.
Dalton completed all six of his passes for 56 yards and also had an eight-yard scramble for a third down. He ducked between center Russell Bodine and Kevin Zeitler for the touchdown.