Thank you for that link. I wanted to cross-reference challenges across all coaches. I have a disagreement with a friend who says that all coaches suck at challenges and game clock management, so I'm trying to either prove or disprove my hypothesis that the Bills coach is really bad at challenges compared to the rest of the league.
Does it have down and distance? I frankly don't care if the call on the field is upheld or reversed. I'm interested in correlating the useless challenges, like a 5 yard completion on 2nd and 6, etc. And I want to do that against all coaches.