A Delaware native, Sund started boxing around the age of 17 at shows staged in Wilmington.

[1] He "progressed rapidly and soon climbed to the top of local ranks in his class, by defeating all the glovemen who faced him," wrote The Evening Journal.

[2] He was trained and often fought at the Keystone Field Club at East Fourth Street, and was managed by Olen Hackett early in his career.

[5] He later fought in the Madison Square Garden and several east coast cities, including Harlem, Albany,[6] Chester,[7] Brooklyn,[8] and multiple others.

[4] On August 30, 1951, Sund collapsed while visiting a friend and was pronounced dead upon arrival to the Delaware Hospital.