Bailey collected two sacks, and four tackles (three solo) in Sunday's game against the Texans.

Bailey finished 2014 with career-highs in tackles (41) and sacks (five), and he's certainly off to a good start in 2015. He'll look to keep things going in Week 2 when the Chiefs square off with a division rival in the Broncos.

Bailey posted three tackles (all solo), one sack and a tackle for loss in the regular season finale against the Chargers.

Bailey made his biggest contribution of his four-year career defensively in 2014, making 41 tackle (27 solo) and five sacks in 14 games, outpacing his previous career highs from 2013 of 30 tackles and one sack. He figures to continue in a similar role for the Chiefs in 2015.

Bailey (concussion) is officially out for Sunday's game against the Raiders.

Bailey hasn't passed his concussion test, and it will leave him out of uniform for Sunday's game against the Raiders. Kevin Vickerson and Vance Walker will likely see snaps in his place again.

Bailey (concussion) missed his second straight practice Thursday, Terez A. Paylor of the Kansas City Star reports.

Bailey missed last week's game because of a concussion he suffered two weeks ago against the Broncos. He will need to pass the concussion protocol to return, but there is no indication at this point whether or not he is on track to do so as of yet.

Bailey hasn't passed the concussion test required to return to the field, BJ Kissel of the Chiefs' official site reports.

Bailey missed Sunday's game against the Cardinals because of a concussion he suffered against the Broncos the week before. Kevin Vickerson and Vance Walker will likely continue to see an added workload until he's cleared.

Bailey (concussion) won't play Sunday against the Cardinals, Adam Teicher of ESPN reports.

Bailey suffered the concussion last week against the Broncos and hasn't passed the protocol yet. Kevin Vickerson and Vance Walker figure to see the bulk of the workload in his absence.

Bailey left Sunday's game against the Broncos with a concussion.

Bailey, who recently inked a four-year, $25 million extension, finished the night with four tackles (two solo). He has 35 (23 solo) for the season, with four sacks and one pass defensed. If Bailey can't make it back for Week 14, the Chiefs will likely start either Kevin Vickerson or Vance Walker at right defensive end.

Bailey signed a four-year, $25 million extension with the Chiefs on Saturday, Terez A. Paylor of The Kansas City Star reports.

Bailey has somewhat quietly been one of 2014's top breakout players, after recording just 45 tackles (36 solo) and two sacks over the first three years of his career. He has 27 tackles (18 solo) and four sacks this season, and while those aren't great IDP stats, they're excellent for a 3-4 defensive end.

Bailey recorded 1.5 sacks and four tackles (three solo) against the Rams on Sunday.

Bailey was quiet against the Chargers last week, but came up with another 1.5 sacks Sunday after doing so in Week 5 against the 49ers as well. He has more sacks through seven games this season than he's had over his first three seasons combined (largely due to extra playing time). If he is able to continue producing, he may keep his starting job heading into next season.

Bailey recorded 1.5 sacks, a tackle for loss, and four tackles (three solo) against the 49ers on Sunday.

Bailey now has 2.5 sacks this season, easily surpassing his totals from any of his past three seasons. While he hasn't recorded a large amount of tackles (nine total, six solo), he is on pace to get upwards of eight sacks this season.

Chiefs placed DE Allen Bailey on injured reserve, ending his season.

Bailey's second NFL season wraps with zero sacks and five tackles in 10 games. The nickel rusher will be back next year to fight for more snaps as a rotational end.

The Chiefs are expected to give second-year DE Allen Bailey an expanded role this season behind LE Tyson Jackson and RE Glenn Dorsey.

With Wallace Gilberry gone, Bailey will be Kansas City's primary nickel end after managing 10 tackles and one sack last season. If Bailey excels in the role, he could be ticketed for a starting job the following season. Dorsey is in a contract year, and Jackson's 2013 base salary is an unmanageable $14.72 million.

Chiefs signed No. 86 overall pick DE Allen Bailey to a four-year, $2.67 million contract.

Coordinator Romeo Crennel got unexpected results out of his defensive line last year, and he has a new toy in the two-time all-Conference selection out of Miami. Bailey is expected to begin his career as an inside nickel rusher.