EXCLUSIVE: The staple of Fox’s NFL and Major League Baseball coverage has signed with CAA for representation in all areas. Joe Buck, the son of legendary broadcaster Jack Buck, is the network’s lead sports announcer, having called 15 World Series and three Super Bowls. He had not previously been set up at an agency, though he continues to be repped by Marvin Demoff of Morris Yorn Barnes Levine Rubenstein Kohner & Gellman.