It's a recorded stat, downs played, as you can access it one player at a time using 4 or 5 clicks to look at each player 1 by 1.
For depth chart purposes, I'd love it if the box score for each game had a simple downs played box. It would help with planning fatigue sliders , pre season conditioning and rotation, depth chart positional numbers, special teams player selection, probably other things to.
Trying to look at each player one by one right now isn't ideal. During my time on MFN, I've found my depth charts to be a little out of whack with my downs played per position/player (dressing more of a certain position than I needed) but only after a ton of clicking, writing down and recording.