At Hanover High School

Mosenthal was a dual-sport athlete, competing in both Football and Track. He was a two-time All-State selection, the Offensive "Player of the Year," and the team captain during his senior campaign. Mosenthal was also impressive on the track, as he was the 55 High Hurdles Class I Champion. The Norwich, VT native was named Hanover High School's "Male Athlete of the Year" in 2007, and finished with 14 consecutive quarters on the High Honor Roll.