Mario Haggan is a former American football linebacker who played in the National Football League (NFL) for nine seasons. He began his football career at Colorado State University, where he played for four years and was named the team's defensive MVP in his senior year.

Haggan was signed as an undrafted free agent by the Buffalo Bills in 2003, where he spent the first four years of his NFL career. He played primarily on special teams during his time with the Bills, but also saw some playing time on defense. In 2007, he signed with the Denver Broncos as a free agent and became a starting linebacker for the team.

Haggan played for the Broncos for four seasons, during which he was a consistent contributor on defense and special teams. He was known for his versatility and ability to play multiple positions, including inside and outside linebacker. In 2011, he signed with the St. Louis Rams, where he played for one season before being released in 2012.

Throughout his NFL career, Haggan was known for his work ethic and leadership qualities. He was a respected veteran in the locker room and was often called upon to mentor younger players. He was also active in the community, participating in various charitable events and initiatives.

After retiring from football, Haggan became a high school football coach in Colorado. He also started his own training program, which focuses on helping young athletes develop their skills and reach their full potential. Haggan remains involved in the football community and is highly regarded for his contributions both on and off the field.

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