Getty Bo Nix #10 of the Denver Broncos looks on before facing the Cleveland Browns. Denver Broncos quarterback Bo Nix is entering his second season as a pro off a historic rookie campaign, with a slew of new high-level teammates, and surrounded by a well-respected coaching staff. Fittingly, opinions of Nix are likewise optimistic heading into training camp. Former Pro Bowl QB Robert Griffin III , who spent nine years in the league before becoming an analyst, called Nix the “most underrated”