Marshall finished with eight tackles and a pass deflection, and did not give up a touchdown pass.
Pagano said he likes the experienced Marshall's professional approach.
"Number one he has played the game," Pagano said. "He's physical. He likes to challenge people at the line of scrimmage, and he moves his feet well. He's a veteran that understands the game and understands the different types of looks to give people.
"When we first got him, it was about getting him to where he's understanding how we need to be and how our defense works. It's been a plus to get someone like that."
Pagano also said that middle linebacker Manti Te'o had his best game of his rookie season. The Notre Dame product finished with five tackles, including a tackle for a loss, and a pass deflection.
"You are seeing him grow with this game and each play," Pagano said. "It's valuable, and there are some things that are still brand new to him. The more exposure and the more reps that he is getting to see these things, you see certain things start to become more natural to him. The more reps he keeps getting the better we will be."