Look out, Peyton Manning. This year’s MVP race just got interesting. With four games to play, Seattle Seahawks second-year signal-caller Russell Wilson is making a strong run at the league’s top award. The Denver Broncos’ thoroughbred remains the favorite to add a fifth MVP to his already crowded trophy case. But Seattle’s favorite underdog continues to dramatically exceed all reasonable expectations while taking a circuitous — and unlikely — route to stardom.