When the Washington Nationals signed Jayson Werth to a seven-year, $126 million deal in December 2010, it shocked the baseball community. Skeptics saw it as an excessive overpayment for an outfielder past 30, but GM Mike Rizzo understood exactly what he was getting. The Nationals weren't just adding a powerful hitter; they were acquiring attitude, postseason experience, and a key leader. With his mountain-man beard and long hair, Werth quickly became the emotional core of a burgeoning team, turning a young, struggling clubhouse into division champions. Werth's 2011 campaign in Washington was a tough adjustment period, but his subsequent seasons…