The Ravens placed veteran safety Will Hill on the active roster today in advance of Sunday's game against the Atlanta Falcons.

Hill has finished serving a six-game suspension for violating the NFL substance-abuse policy and was practicing this week under a roster exemption that was set to expire Monday after being reinstated by NFL commissioner Roger Goodell last week.

The plan is for Hill to play on a limited basis against the Falcons, including work on special teams and some defensive snaps, to get him ready for upcoming games, according to sources.

The Ravens placed defensive tackle Christo Bilukidi on injured reserve with a sprained right ankle.

"Obviously, we expect him to be a very, very good player back there," defensive coordinator Dean Pees said of Hill this week. "I think he's very smart. He's really kept up on everything. It was great to see him back, and I think he's done a good job here in the few days that we've been back practicing. It'll be interesting to see how he progresses, but we think he's the real deal."

Hill was hoping to return sooner than six games as the NFL Players Association lobbied the NFL to reduce his suspension under the revised drug policy after the threshold for testing positive for marijuana was increased. Hill told The Baltimore Sun that he failed his drug test while he was on the New York Giants' roster due to inhaling second-hand marijuana smoke. Plus, Hill's case fell into a grey area of the policy, which didn't cover six-game suspensions.

"Yeah, I was praying on it," Hill told The Sun this week. "The team backed me, the union and my agents. Ultimately, it wasn't what the NFL wanted. I had to sit that out. I didn't get my hopes up. If it came, it came. I just took my punishment like a man."

A three-time violator of NFL drug policies with a previous suspension for performance-enhancing drugs for taking Adderall, a drug commonly used to treat attention deficit hyperactivity disorder, Hill lost his appeal earlier this year and was cut by the Giants.