Don Mattingly must be wondering how Dave Roberts does it, taking Clayton Kershaw out of a game with a one-run lead, even immediately after letting the lefty bat for himself. There was no pitcher arguing with the manager in the dugout this time, as the Dodgers and Kershaw outdueled the Nationals and Stephen Strasburg, 2-1, on Wednesday. Roberts said he planned to let Kershaw pitch the eighth inning and face the top of Washington's order for a fourth time, then didn't.