ESPN Ravens reporter Jamison Hensley explains the team's decision to sign LB Jason Babin as a replacement for Terrell Suggs, who is out for the season with an Achilles injury. (2:33)

SAN JOSE, Calif. -- Jason Babin will practice for the Baltimore Ravens for the first time Wednesday, and the team is hopeful he'll be rushing the Oakland Raiders quarterback -- whether it's the banged-up Derek Carr or backup Matt McGloin -- on Sunday.

The Ravens officially signed Babin to a one-year contract Wednesday and placed Terrell Suggs (Achilles) on injured reserve. Babin, 35, is going to be a situational pass rusher, the same role he had with the New York Jets last season. So, he'll likely only need to play between 25 to 30 snaps Sunday.

While he's not an every-down player, Babin has shown the ability to make a solid impact despite limited action. Last season, he was the only 3-4 linebacker in the NFL who had over 25 quarterback hurries with less than 500 snaps, according to Pro Football Focus.

"I like the way he plays. I like his style, his mentality," coach John Harbaugh said. "He's a tough, smart, hard-playing guy. I think he said it best. His resume is the tape. He was playing with the Jets in the preseason, and we watched that very carefully. He looked like he fit us well."

Not having Suggs is a big change for the Ravens defense. He is the franchise's all-time sacks leader, and he ranked as the fifth-best run stopping linebacker by Pro Football Focus last season.

The Ravens plan to move Elvis Dumervil into Suggs' rush linebacker spot on first and second downs, and they will team Dumervil with Babin as their edge rushers in passing situations.

"You're not going to change everything you do," Harbaugh said. "You try to get a player that fits what you do. That's the smartest way to do it and it makes for the least amount of changes. Jason fits us really well."