Wismer achieved the height of his fame as the voice of the Washington Redskins. His first game for the Redskins was a most inauspicious one in December 1940, their 73–0 loss to the Chicago Bears' great "Monsters of the Midway" team in the 1940 championship game. At one point Wismer was a 25% owner of the club as well, with the majority of the stock being retained by founding owner George Preston Marshall. However, the relationship between the two had greatly degenerated by the mid-1950s over several issues, not the least of which was Marshall's steadfast refusal to sign any black players. The relationship dissolved in claims, counterclaims, and litigation, and Marshall then set out to destroy Wismer's future as a broadcaster, with some success. Wismer was also involved for a time in the broadcasting of Notre Dame football.