Inconclusive! When you get down to freshman teams, it can be sketchy. Maybe he quit, or just stopped showing up. I wouldn't press this one too hard.
Biden been doing 5 college campaign stops a week for 2 years and often talks about his college football days. He wasn’t there in 61’ team and didn’t play as a freshman. Also he states he played intramural football in the 1984 alumni yearbook.
He most certainly was not on the team in 1963 when they beat Ohio as he claimed in Athens Ohio a month ago.