since when is Gumble a sports guy? I thought that was only his brother
Sports is actually where he got his start.
He first worked for NBC Sports in the fall of 1975 as co-host of its National Football League pre-game show GrandStand with Jack Buck.
From 1975 until January 1982 (when Gumbel left to do The Today Show) Gumbel hosted numerous sporting events for NBC including of Major League Baseball, NCAA basketball, and the National Football League. Gumbel returned to sportscasting for NBC when he hosted the prime time coverage of the 1988 Summer Olympics from Seoul and the PGA tour in 1990.
One of Bryant Gumbel's more memorable moments during his stint at NBC Sports occurred in 1982, when he was on site for the now legendary "Epic in Miami" NFL playoff game between the San Diego Chargers and Miami Dolphins. When the game was said and done, Gumbel told the viewing audience "If you didn't like this football game then you didn't like football!"