Game 151 lineups: Nats at Marlins

MIAMI - It's a marquee matchup tonight, as the Nationals' Tanner Roark challenges the Marlins' Jose Fernandez.

Roark, who is 15-8 with a 2.75 ERA, is seeking a career-high 16th win. Fernandez is also 15-8, with a 2.99 ERA.

Fernandez has never lost to the Nationals: He is 6-0 with a 1.13 ERA in nine starts, with 72 strikeouts and just seven earned runs allowed. He is 3-0 with a 1.42 ERA against the Nationals this season, surrendering only three earned runs in 19 innings.

Roark is 3-7 with a 4.29 ERA in 16 games (10 starts) against the Marlins. This season, Roark is 1-3 with a 6.23 ERA in four starts versus Miami.

Bryce Harper is back for the Nationals, but Daniel Murphy (leg soreness) is still out of the lineup. The pair did pinch-hit in the ninth inning of Monday's series opening 4-3 Marlins win. Also not starting today is first baseman Ryan Zimmerman. It would appear to be a day of rest for Zimmerman, but manager Dusty Baker will have more on that before the game. Left fielder Jayson Werth also gets the night off. Stephen Drew, Brian Goodwin and Clint Robinson get starts.

The Nationals are up by eight games on the Mets, with the magic number to clinch the National League East at five and 12 games remaining.

WASHINGTON NATIONALS at MIAMI MARLINS

Where: Marlins Park, Miami
Gametime: 7:10 p.m. EDT
TV: MASN2, MLB.tv
Radio: 106.7 FM, XM 184/Internet 869, MLB.com
Weather: Indoors, 79 degrees

NATIONALS (88-62)

CF Trea Turner
2B Stephen Drew
RF Bryce Harper
3B Anthony Rendon
1B Clint Robinson
C Wilson Ramos
LF Brian Goodwin
SS Danny Espinosa
RHP Tanner Roark

MARLINS (75-75)

2B Dee Gordon
LF Marcell Ozuna
3B Martin Prado
CF Christian Yelich
RF Giancarlo Stanton
1B Justin Bour
C J.T. Realmuto
SS Adeiny Hechevarria
RHP Jose Fernandez