When Steve Mariucci took over as the 49ers' next head coach ahead of the 1997 season, Steve Young already was established as a star quarterback in the NFL.
By that point, Young had 12 years in the league under his belt. He had two MVP trophies to his name and multiple Super Bowl rings. When Mariucci arrived for training camp in '97, though, Young still found a way to surprise his new coach.
"When we came into training camp, most teams will test their athletes to see if they're in shape and high schools and colleges will do the same thing .