Some unfamiliar names highlight the Week 12 tackle leaders -- guys like Ronnie Harrison, Troy Reeder, Mykal Walker and Dean Marlowe -- but not all spikes in production are worth our roster spots. Harrison is an interesting case, as the Browns’ safety is a fourth-year pro who is now on his second team after coming up with the Jaguars. He didn’t see more playing time than normal, so what happened for him to total 14 combined tackles on Sunday? Sometimes it just boils down to a bad game for the defense, and that’s understandable having to deal with Lamar Jackson taking a bunch of runs to the second level.