For the first time in five contests -- and just the second time all season -- the club activated Harrison for Sunday's win over the Vikings, and apparently liked the way the third-year defensive tackle performed.
"I was happy with Marcus," coach Lovie Smith said. "It was good to get him some reps [against the Vikings]. If he's active this week, hopefully we'll get him a few more. I guess it's safe to say he'll be active this week, what am I talking about? I can go ahead and leave that. The way he played last week, hopefully we'll get him a few more reps."
Harrison contributed a tackle against the Vikings, but found himself near the ball on nearly every snap he played. Because the Bears anticipate Miami running the ball more this week, Smith suggested Harrison could play a more prominent role in the defensive line rotation.
"We'll need another big body this week with the running game they have," Smith said.
A third-round pick in 2008, Harrison has played in 34 career games with nine starts, and contributed 53 career tackles, three sacks, and batted down two passes.
Michael C. Wright covers the Bears for ESPNChicago.com.