[2] Yagiello chose to pass on professional baseball and accepted a football scholarship from The College of William & Mary.
As a redshirt freshman in his first college start against Miami of Ohio Stan threw for 414 yards with 2 TD passes.
After an injury in week 3 he platooned at quarterback until the sixth game of the season against Dartmouth College, when he took over the regular starting role.
Yagiello also played college baseball, leading his team with a .437 batting average and a .470 on-base percentage as a junior in 1984.
On August 18 he was released to make room for quarterback Doug Williams, who was coming from the United States Football League.
[3] On July 6, 1987, he was signed by the Pittsburgh Gladiators of the Arena Football League, to replace backup quarterback Kevin Russell.