After leaving Scranton High School, Fenton began his college football career at St. Michael's College, in Canada, in 1904. At St. Michael's, he played rugby. Fenton later talked about his time at St. Michael's by stating “I got all the fundamentals playing rugby in Toronto. I learned how to kick on the run, and I learned how to operate in an open field.” He later played football at Mansfield State Normal School (now Mansfield University) in Pennsylvania from 1904–1906. He started out as an end at Mansfield, but later became a star receiver in 1906, which was the first year of the legal forward pass. Mike Lally was a teammate at both Mansfield and LSU.