In some games, he even gets a massive stat bonus if he and Achmed are on the same team. Nine years later, Joey is one of the new Backyard Kids.
NFL Backyard Basics handles this by having the present-day pros turn into kids while they're in the Clubhouse.
Not only that, but also by the time some of the pros were born, others would've already been teenagers or even adults. The series in general provides examples of:
