Kelsay's "solid" season last year. 5.0 sacks. 3 came against Tebow and the Broncos. Great game, but the entire defense shut Tebow down that game in a blowout. The other 2 sacks in 11 games? Miami (1) and Washington (1). So he also got to John Beck and Matt Moore once. Wow.
Sad thing is, CK probably could've nearly doubled his sack total last year if he had ANY pursuit or tackling discipline after 9 years in the league. He still doesn't. He still gets wide eyed when he gets back there, and whiffs on way, way too many plays.
Tackles and run support? Hard to say that with the Bills historically bad run defense. 10 tackles in the aforementioned Denver game. Great. The other 11 games? He averaged less than 3 tackles (solo+assited) per.
Is CK a great guy? Sure, maybe. Doesn't change the fact he disappears for stretches on the field and has been a major cog in some awful defenses during his time here. You can make the excuse he was surrounded by "bartenders" and it's not his fault. I contend he is one of those bartenders and should've been out long ago.
Kelsay's extension is still mystifying to me, but obviously it was a vote of confidence by Nix and Gailey. But pair it with Nix's other moves the last few years ( drafting carrington, signing merriman, williams and anderson) and I think that confidence is wearing thin.