SIAP: Steve Lorenz calls b/s on offensive line graph

I don't think you understand how percentiles work.

Shitty hot takes smell worse in warm weather.  Fact.

I think there's a really interesting discussion around this idea.  Without knowing the exact play call, how accurate can these game charting systems be?  And coaches will never release the actual play call.  So coaches can call these out and say their internal charting shows very different results, and fans can't really object because they don't know the play call. However, I'm sure coaches will lie to cover their players or create more confusion among opponents.  So the best we get is flawed data.

I think the hubbub is mostly because PFF has blown up and the subjective grades are being elevated/presented as gospel by ESPN, game announcers, writers, etc. 

PFF is useful (more information!) but a bit scattershot, particularly with line play. Like any attempts to quantify football, if you don't know the assignments and how things are coached, you're always going to miss on a fair amount of plusses and minuses. 

It's not just sour grapes: I know TJ Lang has been vocal about PFF being wrong and he's a PFF fave rave. 

and worst in all of college football.

Would be curious to see where Ulizio and Onwenu actually fall. Obviously, it's somewhat pointless to compare across all teams this early in the season, as differences in opponent quality are so vast. But it should still be relatively easy to do this analysis. Wonder where these guys went wrong...

Below average on this graph is <50.

Onwenu and Ulizio's scores on the graph indicate that Onwenu is in the bottom ~15ish in all of FBS while Ulizio is in the bottom ~3ish in all of FBS (I didn't look up the exact number of teams, I think it's around 130 though, so 260 starters at Guard and Tackle each). That's a LOT worse than just below average.

Methodology is likely poor and Michigan's internal charting shows much different results.  These sites don't know the playcall, and I doubt they spend enough time on each game if they are actually charting every player on every play.  Look at how long Brian takes to do UFR and that is just for 1 game a week, plus even he admits that his charting isn't perfect due to info he doesn't have from the coaches.  So you need to take these numbers with a big grain of salt and if something doesn't pass the smell test, it's likely an error.

but they are looking for volunteers to chart their favorite teams. I think they only chart a dozen or so teams, so their percentile ranks are probably just for them.