According to CBS Sports' Jon Heyman, the Nationals are interested in trading for Rays righty James Shields.
Shields is also drawing trade interest from the Rangers. The 30-year-old starter registered a stellar 3.52 ERA, 1.17 WHIP and 223/58 K/BB ratio across 227 2/3 innings this past summer for Tampa Bay. He finished third in the American League Cy Young Award voting in 2011. The Rays will probably want multiple top prospects in return.