One of the biggest questions that Detroit Lions fans had last Sunday was why is James Houston not playing? we've had our own theories and we've shared those, but Lions head coach Dan Campbell gave some answers on Wednesday that might illuminate what's going on.

James Houston was a healthy scratch for the Detroit Lions in Week 1. The third-year pass rusher was held out of the Lions' win over the Rams, a Los Angeles team that was quite vulnerable at offensive tackle.

When asked at his Friday media session, Dan Campbell did not mention outside linebacker James Houston as a potential depth replacement, even though the former sixth-round pick was named by the reporter asking.

The Detroit Lions will play the Tampa Bay Buccaneers in less than two hours in a playoff rematch from last January, but first we need to look at who won't be playing in this game for both teams. Let's start with the Lions.