He negotiated one of the largest sports endorsement deals , the Electronic Arts Madden video game , which is said to have generated more than $100 million in royalties for Madden .
His personal clients include Bob Costas and , of course , Madden .
Bob Costas negotiated one of the largest sports endorsement deals , the Electronic Arts Madden video game , which is said to have generated more than $100 million in royalties for Madden .
His personal clients include Bob Costas and , of course , Madden .