I definitely tried to do something like that at a very basic level. Looked at seasons 1-6 and 7-12 as two queries and crossed the references against each other to. Include guys who only made one list. Obviously wanted to keep out the 1 year wonders so 5-ish cumulative seasons is probably a decent target to even get into an elite list, but I went with 6 just because that was where Mack was starting at. Also, as mentioned guys like White and Dent who were very strong through 6, I noted that even if they dropped off, they still had strong numbers. So they didn't age well from a comparative point, but did still in an absolute sense. Definitely there could be more sophisticated ways to do it (for one, trying to do a rolling 6 season as you might find a guy who was elite in years 3-8 and made neither of my lists). Also perhaps need my second leg to meet a slightly more generous threshold. For example if a guy went 12, 12, 10, 9, 4, 0 his last 6 seasons, he still aged fairly well (and such a result I think most Bears fans would be happy with from Mack considering the contact), but he'd miss my second list threshold. So, doing this again "properly" and not quick and dirty, I'd probably try something like "best 4 seasons" against rolling average 3 seasons over their remainder of their career, or something like that. Which would probably make me feel better about Mack, but kind of prove the "elite" part is self fulfilling and that Mack just doesn't belong with the likes of truly elite pass rushers (but still very good in other harder to measure areas... But also isn't being paid for his run D). But I do agree with your last point, which is what I suspected when I started this list in my reply to David. It's self-fulfilling and a selection bias issue that created that particular myth. The drop for Mack has been precipitous, he went from someone who could change the outcome of a game to nearly invisible. He had no effect in yesterday' game, they'd won with or without him, and he'll probably make no difference in this Bears' season. I guess its a combination of the items mentioned above, injury and a difference in what constitutes holding. During the game, on both sides, most especially on Mack, I've seen the OL' arm under chin 'block', Mack' essentially by the blocker however, the blocker is using Mack' chin and neck to hold him back. I do not know how the hell that isn't a hold. That "great" Mack stopping former Packer OL, Bryan Bulaga, was expert at that, along with his other holds of Mack.