A native of Delaware, Sund started a professional boxing career at the age of 14, after being matched up by local promoters against the bantamweight fighter Willie Griffith.

His first and only two losses came by close decisions in 1922, one of which came against the flyweight champion of the Philippines.

[3][1] On October 5, 1925, he was named the state flyweight champion after defeating Mickey Morris by decision.

[3] After his boxing career, Sund worked as an interior decorator, and, according to customers, was "one of the fastest paper hangers in the business.

[4] Through the efforts of his brother Walter, Sund was inducted into the Delaware Sports Museum and Hall of Fame in 1998.