With two experienced quarterbacks of the caliber of AI Dorow and Dick Jamieson on the roster, a rookie signal- caller doesn't get much of a chance to put in playing time. That was the case with Scrabis last year. Fresh out of Penn State, where he lettered in football for three years and in baseball for two, the big quarterback saw only limited duty in 1960. During the off-season, the Albany, N. Y., "resident is a graduate assistant in business administration at Penn State.