Baker Mayfield is off the bench and making his NFL debut.
The No. 1 overall pick in this year's draft replaced injured starting quarterback Tyrod Taylor late in the first half of Thursday night's game against the New York Jets. Taylor was slow getting up after being sacked for the third time and after being evaluated in the medical tent, was taken to the locker room for treatment.
The Browns say Taylor is being evaluated for a concussion.
Mayfield completed a 14-yard pass on his first throw and then fired 17-yarder on his second as Browns fans roared.
The Heisman Trophy winner's first drive — he went 3 of 4 for 47 yards — ended with rookie Greg Joseph kicking a 45-yard field goal to pull with the Browns within 14-3.
Cleveland's plan was to have Mayfield sit and learn this season behind Taylor, but the injury could change things dramatically.