Then came back and were never as good as they were their freshman year.
One was a starting nose guard as a freshman. Post mission, just was never as quick or strong.
Another went to Nebraska pre-mission. Came home and ended up deciding to be done with football.
I was ripped before my mission. Took me 2.5 years post mission to get even close to premission shape.
It depends on a lot of factors. But on average, no one could or should be able to come back without a lag. If they do, they weren’t serving a mission, they were on a mission trip.