MIAMI – Chad Tracy singled home Hanley Ramirez with the winning run as the Florida Marlins beat the Washington Nationals 1-0 in 10 innings on Tuesday night.
Ramirez singled with one out off reliever Drew Storen, then stole second. After Gaby Sanchez drew a walk, Tracy singled to left.
Roger Bernadina's throw was on target, but Ramirez slid under the tag attempt by catcher Ivan Rodriguez, who argued the call vehemently.
It was the ninth walk-off win for the Marlins this season.
Zimmermann allowed just one hit in six innings — a double by Gaby Sanchez to lead off the second. He then retired the next 15 batters before leaving after throwing 86 pitches. Zimmermann struck out a career-high nine.
Tuesday was Zimmermann's second start since being recalled from Triple-A Syracuse on Aug. 26. He missed 12-plus months following Tommy John surgery after being named the Nationals' 2008 Minor League Pitcher of the Year.
Washington said that pitcher Stephen Strasburg will undergo Tommy John surgery to repair a torn ligament in his right elbow on Friday. Strasburg suffered the injury on Aug. 21.
Anibal Sanchez matched Zimmermann allowing just three singles in seven innings while striking out seven.
The Nationals had a chance to score in the 10th. With runners on first and second and one out, Adam Kennedy hit a grounder to second baseman Emilio Bonifacio, who flipped it to shortstop Ramirez for the force out at second. Nyjer Morgan attempted to score from second on the play. Ramirez threw home and Morgan, who might have scored had he slid into home, instead collided with catcher Brett Hayes. Hayes held onto the ball and Morgan was called out. Hayes remained on the ground for a couple minutes, still holding onto the ball.
Notes: Marlins 2B Dan Uggla missed his second straight start with a strained groin. He had started all 129 previous games this season.
(This version CORRECTS Marlins 1, Nationals 0. Corrects spelling of Zimmermann)