Does anyone know when 4.6 game engine came in?

Want to look at some games - thinking last 5 seasons would be ok for purely 4.6?

It's been a few calendar years, you might be able to pin it down if you go through the XFL forums. Pretty sure CJ did a stat breakdown around for passing yards soon after it was released.

Saw a post 1/21/2022; league may not have updated to 4.6 immediately, so season 2038 - now season 2060. 20 seasons worth of data, then, quite a bit.