WASHINGTON, D.C. -- Nationals Park was rumbling when Grant Dayton handed the ball to Kenley Jansen in the seventh inning Thursday night. Chris Heisey had just hit a two-run home run to narrow the Dodgers' lead to 4-3, and Clint Robinson was on first base with a single.In came Jansen, the Dodgers' closer, to record as many of the final nine outs as he could -- something he'd never attempted in his life.