If you are unfamiliar with the QBOPS family of stats, you may want to consult the glossary before continuing, however, if you just want to understand the gist, familiarity with the FTN statistics DVOA and DYAR will be sufficient.
What is SiYAA?
First off, you can see the 2024 SiYAA statistics here, and you can see it for all WRs since 2018 here.
I think my quarterback statistics, QBOPS and QWOBA (especially when adjusted for strength of defense faced and receiver quality) are working pretty well at the moment. I, as a human being, liked Caleb Williams above the other rookie quarterbacks last season (and I still think he will be good if the Bears do some work on the offensive line, and if Ben Johnson is truly the offensive mind so many believe him to be), but my system much preferred Jayden Daniels.