Tapp played three games for the Bucs and wasn’t on the field much, and certainly not noticeably. The veteran was supposed to bring some kind of boost to a struggling pass rush, but wasn’t able to do so—which is about what you can expect from a mid-season street free agent in his 30s.
As for O’Connor, he was the Detroit Lion’s seventh-round pick this year and had 8.5 sacks and 14.5 tackles for loss in his final year at Eastern Michigan. He picked up one sack in preseason for the Lions, and has good size at 6’5”, 277 lbs. Add in a 4.8-second 40-yard dash, and there’s some potential there for him to turn into a steady NFL defender, though probably not an impact pass-rusher.