Question: What was the name of the older brother who became the first African-American announcer to call play-by-play of a major sports championship in the United States, of currently a play-by-play broadcaster for the "NFL on CBS" alongside a former American football quarterback who earned a Super Bowl ring with the Rams and was selected to two Pro Bowls with the Chiefs?
Sentence (from "Greg Gumbel"): He is best known for his various assignments on the CBS network (most notably, the National Football League and NCAA basketball).
Relevant evidence: No