Lynch, a first-round pick from Memphis, will replace Trevor Siemian, who suffered a left shoulder sprain in the second quarter of 27-7 victory over Tampa Bay last Sunday.
Lynch, who some considered the most athletic quarterback in the draft over No. 1 pick Jared Goff (Rams) and No. 2 Carson Wentz (Eagles), came on and completed 14 of 24 passes for 170 yards and a touchdown. He was the 26th overall pick in the draft.