In January of 1970, the Minnesota Vikings were heavy favorites against Kansas City in the last year prior to the NFL-AFL merger. It was going to be a walk in the park for Vikings in Super Bowl IV. Not so fast. It's still one of the big game's largest upsets and it was heard on WCCO, one of the most memorable moments in the station's 100 years. 

(Vikings quaterback Joe Kapp scrambles up field against the Minnesota Vikings during Super Bowl IV at Tulane Stadium. The Chiefs defeated the Vikings 23-7. Photo By Manny Rubio-USA TODAY Sports © Copyright Manny Rubio.)