You may want to track this. You may find it interesting. Surprising stats on Steelers’ Roethlsiberger, Dupree, pass-rush, O-line https://triblive.com/sports/surprising-stats-on-steelers-roethlsiberger-dupree-pass-rush-o-line/ "Some of the Steelers data was surprising to me. Burke’s numbers indicate the Steelers’ pass protection wasn’t as steady as we may think. Bud Dupree is more effective than we may presume. And the Steelers’ overall pass-rush is more consistent than their boom-or-bust sack totals on a week-to-week basis." Interestingly enough you have your flip-side. PFF: Pittsburgh Steelers offensive line ranked 1st in 2018 https://stillcurtain.com/2019/05/15/pff-steelers-oline-ranked-1st-2018/ "Though the Steelers starting offensive line unit is getting up there in age, they were able to stand together as one of the best and most consistent lines in all of football last year." Statistics don't lie. Interpreters of statistics do error. Which is correct? Not which do you want to be correct?