KANSAS CITY, Mo. -- The Chiefs put tight end Kevin Boss on injured reserve with a head injury Wednesday after doctors determined they would not clear him to play the rest of the year.
He caught three passes for 65 yards and a touchdown before getting hurt in Week 2 at Buffalo, when Bills safety Da'Norris Searcy's elbow slammed into his helmet.
"When he didn't make the comeback, you know, and it was taking time, I was kind of concerned there might be an issue, because generally they do those baseline tests and you can make a comeback, you see improvement," Chiefs coach Romeo Crennel said. "So when it took a little longer to show improvement, I thought there could be an issue, and found out there was one."
The injury is a significant blow to a Chiefs offense that has struggled with inconsistency, leads the league in turnovers and has been unable to put together many sustained drives.
"Kevin was disappointed. We were disappointed, because we thought he was a good addition to the team, thought he'd be able to help us," Crennel said. "He enjoys playing football, wants to play football, but with his situation, he won't be able to pay this year."
Crennel said recent emphasis on player safety, in particular when it comes to concussions, only underscored the decision to shut Boss down for the season.
"I think the doctors, they do their job," Crennel said. "They look at all the things and make the decision, and in their determination, they decided not to let him play again."
The decision to add depth at linebacker rather than another tight end indicates that Crennel believes Moeaki is healthy enough to carry a full load, and that backups Jake O'Connell and Steve Maneri -- a former offensive lineman -- are capable of making a positive contribution.
In other news, the Chiefs were forced to practice for Sunday's game against Baltimore without running back Peyton Hillis (right ankle), defensive ends Glenn Dorsey (left calf) and Ropati Pitoitua (left elbow), and cornerback Jalil Brown (hamstring) on Wednesday.
"The guys who can practice will practice, and the guys who are limited will be limited," Crennel said, "and we'll go from there."