Washington- Hall of Fame broadcaster Dave Niehaus has died of a heart attack. He was 75. The team confirmed that Niehaus died Wednesday. Niehaus was the voice of the Mariners from their first game on April 6, 1977, through the end of the 2010 season with his golden Midwestern voice punctuated by his trademark "My oh My!" and "It will fly away!" calls. He was the recipient of the 2008 Ford C. Frick award and was inducted into the broadcasters' wing of the Baseball Hall of Fame.