The first of Jayson Werth's seven seasons in Washington will come to an end later today. From the start, Werth sought to place his Nationals tenure in the context of the franchise's advancement. In Viera, Fla., this past March, Werth sat in the dugout at Space Coast Stadium and largely deflected questions about his personal history. He was more interested in sharing how he envisioned the Nationals progressing. Werth's season by any objective measure would be classified as a letdown. After signing a seven-year, $126 million contract, he's hitting .233/.332/.391 and has produced fewer than three wins above replacement, the catch-all metric formulated by that aims to measure a player's total contribution. But Werth chafes at the popular notion that his first season here was a disappointment. He views his success and failure through the prism of the team's success and failure. He feels comfortable with the Nationals' improvement this year and the role he played in it.