12:13 PM - Ray Davis (Buf) played three of the Bills' 64 offensive snaps and tallied 105 kick-return yards in Sunday's 28-21 win over the Chiefs.

3:05 PM - Ray Davis (Buf) (illness) doesn't have a designation for Sunday's game against the Chiefs.

3:55 PM - Ray Davis (Buf) (illness) was listed as a full participant at Thursday's practice.

1:20 PM - Ray Davis (Buf) (illness) is back at practice Thursday, Alaina Getzenberg of ESPN.com reports.

12:35 PM - Ray Davis (Buf) (illness) won't practice Wednesday, Maddy Glab of the Bills' official site reports.

12:11 PM - Ray Davis (Buf) rushed nine times for 16 yards and didn't catch his only target in Sunday's 40-9 win over the Panthers.

11:35 AM - Ray Davis (Buf) caught both of his targets for 19 yards and one touchdown in Monday night's loss to the Falcons.

1:31 PM - Ray Davis (Buf) rushed twice for one yard in Sunday's 23-20 loss to the Patriots.

12:10 PM - Ray Davis (Buf) rushed once for three yards in Sunday's 31-19 win over the Saints.

1:02 PM - Ray Davis (Buf) failed to record a touch on offense in Buffalo's 31-21 win over the Dolphins on Thursday night.

6:09 AM - Ray Davis (Buf) rushed nine times for 24 yards in Sunday's 30-10 win over the Jets.

7:27 AM - Ray Davis (Buf) rushed once for two yards and reeled in his lone target for minus-1 yard in Sunday's 41-40 win over the Ravens.

5:38 PM - Ray Davis (Buf) carried the ball four times for seven yards, caught one of two targets for seven yards and kicked an extra point in Saturday's 34-25 preseason loss to the Giants.

10:59 AM - Ray Davis (Buf) and Ty Johnson are getting more first-team reps while James Cook (contract) misses practice, Jay Skurski of The Buffalo News reports.

11:12 AM - Ray Davis (Buf) took first-team running back reps at Thursday's voluntary team activities with James Cook absent, Lance Lysowski of The Buffalo News reports.

1:39 PM - Ray Davis (Buf) carried the ball twice for four yards during Sunday's 32-29 loss to the Chiefs in the AFC Championship Game.

5:20 PM - Ray Davis (Buf) (concussion) is listed as active for Sunday's divisional-round game against the Ravens.

2:16 PM - Ray Davis (Buf) (concussion) is listed as questionable for Sunday's divisional-round game against the Ravens.

11:31 AM - Ray Davis (Buf) head coach Sean McDermott said Friday that Davis is still in the NFL's concussion protocol, Katherine Fitzgerald of The Buffalo News reports.

3:34 PM - Ray Davis (Buf) (concussion) practiced in a limited capacity Thursday.

3:18 PM - Ray Davis (Buf) (concussion) was a limited participant in Wednesday's practice.

12:15 PM - Ray Davis (Buf) coach Sean McDermott noted Wednesday that Davis remains in the NFL's concussion protocol, Maddy Glab of the Bills' official site reports.

3:36 PM - Ray Davis (Buf) has been diagnosed with a concussion and is ruled out for the rest of Sunday's AFC wild-card game against the Broncos.

3:00 PM - Ray Davis (Buf) is being evaluated for a head injury duringSunday's wild-card round game against the Broncos.

5:07 PM - Ray Davis (Buf) rushed six times for nine yards and caught his lone target for four yards in Sunday's 40-14 win over the Jets.

9:36 AM - Ray Davis (Buf) rushed five times for 12 yards and caught his lone target for 17 yards in Sunday's 24-21 win over the Patriots.

3:38 AM - Ray Davis (Buf) rushed seven times for 15 yards and caught both of his targets for 14 yards and a touchdown in Sunday's 48-42 win over the Lions.

5:12 PM - Ray Davis (Buf) rushed four times for 20 yards while catching both of his targets for 70 yards and a touchdown in Sunday's 30-27 win over the Dolphins.

5:12 PM - Ray Davis (Buf) had six carries for 29 yards and was not targeted in the passing game during Sunday's 31-10 win over the Seahawks.

11:38 AM - Ray Davis (Buf) (calf) is listed as active for Sunday's game against the Titans.

2:58 PM - Ray Davis (Buf) (calf) is listed as questionable for Sunday's game versus the Titans, Alec White of the Bills' official site reports.

11:05 AM - Ray Davis (Buf) head coach Sean McDermott said Friday that Davis (calf) will be limited in practice but that Buffalo is uncertain about his availability for Sunday's game against the Titans, Maddy Glab of the ' official site reports.

3:47 PM - Ray Davis (Buf) (calf) was limited at practice Thursday.

4:47 AM - Ray Davis (Buf) caught one of his two targets for four yards in Sunday's 23-20 loss to the Texans.

3:01 AM - Ray Davis (Buf) rushed seven times for 11 yards in Sunday's 35-10 loss to the Ravens.

2:42 PM - Ray Davis (Buf) carried seven times for 22 yards and a touchdown and caught his only target for one yard in Monday's 47-10 win over Jacksonville.

5:19 PM - Ray Davis (Buf) rushed five times for two yards and caught three of four targets for 19 yards in Saturday's 33-6 preseason loss to the Bears.