Josh Johnson and three relievers combined on an 11-hit shutout, and the Florida Marlins beat the Washington Nationals 2-0 Saturday night.

The Nationals went 0 for 9 with runners in scoring position and stranded 10.

Johnson (10-3) struck out seven and walked none in six innings, lowering his NL-leading ERA to 1.62. The All-Star pitcher has not allowed more than two runs in his past 12 starts, pitching at least six innings each time.

Ronny Paulino drove in the only runs with a single in the second off Livan Hernandez (6-6).

Washington had plenty of scoring chances, with at least one hit in seven innings. Johnson allowed singles by Nyjer Morgan and Roger Bernadina to start the game and needed 22 pitches to get his first out but escaped, setting a pattern for the night.

Adam Dunn stranded five runners by striking out three times against Johnson. Ryan Zimmerman was retired three times, stranding two runners on each occasion.

Washington's Adam Kennedy was thrown out at the plate in the fourth trying to score from second after second baseman Dan Uggla mishandled a two-out grounder.

Leo Nunez gave up a two-out scratch single in the ninth before earning his 21st save in 26 chances. The Marlins have eight shutouts this season, all with help from their much-maligned bullpen.

Johnson improved to 7-0 in 14 games against the Nationals, but he lost the weekend battle of the box office to Washington rookie Stephen Strasburg. Friday's game drew 27,037 when Strasburg pitched, while attendance Saturday was 23,005. That didn't include a bee infestation that forced the Marlins to close an area of seats near the Nationals' bullpen.

Marlins left fielder Chris Coghlan left the game because of back pain after he struck out in the fifth.

Hernandez allowed only four hits and one earned run but departed for a pinch hitter after six innings trailing 2-0. He remained winless since June 21.

The Nationals squandered repeated chances to help him. They had two on with one out in the fifth, but Johnson retired Zimmerman and Dunn. Washington again had two on with one out in the seventh, but Jose Veras retired Bernadina and Zimmerman.

Florida took advantage of an error by shortstop Ian Desmond to score twice in the second inning. After Desmond dropped Uggla's soft liner, Jorge Cantu singled and Mike Stanton walked to load the bases. Paulino followed with a one-out single.

Notes: Hernandez singled in the fifth for his 200th career hit. His average is .224. ... The Marlins hope C John Baker (right arm) will return in late August or early September. He has been sidelined since May 14. ... Left-handed hitters are 1 for 21 (.047) against Florida LHP Taylor Tankersley. ... Nationals C Ivan Rodriguez is batting .349 (22 for 63) with runners in scoring position.