Loeffer mentioned in Boston.article...about Tom Brady
"He would take the script, he and Scot Loeffler, and they would run through the entire practice together,” Griese said. “Tommy would grab a couple freshmen receivers, and they would go through every play, every adjustment, and every blitz. They’d be out there for an hour after everybody else was gone off the field.”
“I had gone in and taken a shower, done a couple of interviews,” he continued. “I’m leaving, and there’s Tommy out on the field running through the whole script. There was no question in anybody’s mind, I don’t think, pretty early on that Tommy was going to be a success.”
https://www.boston.com/sports/new-england-patriots/2018/08/28/tom-brady-michigan-quarterback