A two-sport student-athlete during his time at UMass Dartmouth, Yarbough was a member of the men's track & field and football teams. Serving as captain for both the indoor and outdoor track & field squads, he graduated as the school record holder in both the indoor and outdoor shot put, along with the indoor 35-lb. weight throw.

Yarbough produced the second-best throw all-time in program history in the indoor weight throw with a distance of 179-10 (54.82 meters), also owning the fourth-best distance in the indoor shot put with a mark of 49-02.50. Among all outdoor student-athletes, he currently owns the third-best marks in shot put (52-03.25) and hammer throw (179-10). Yarbough was the Little East Champion in the indoor shot put in 2010, along with the outdoor event in 2012. He also captured the LEC weight throw title in 2012.

A member of the Corsairs football team, Yarbough captained the squad in his senior season. He was named a 2011 NEFC Boyd Division First Team All-Star, as well as an NEFC All-Academic in that season. Yarbough was also a 2010 NEFC Boyd Division Second Team All-Star in his career.