Game 50 lineups: Nats at Giants

SAN FRANCISCO - Hello from the banks of McCovey Cove, where it's currently 54 degrees with a nice marine layer hovering over everything as the Nationals begin their week-long tour of the Bay Area. Yes, this is a rare (and nice) road trip that includes three games against the Giants, an off day and then three games against the Athletics on the other side of the bay.

These Giants are not the Giants we've come to know over the last half-decade or so, languishing near the bottom of the National League West a full eight games under the .500 mark. They rank, along with the Padres, at the bottom of the league in most offensive categories. It's basically Buster Posey, Brandon Belt and ... not much else.

The Nationals are sending Tanner Roark to the mound for today's matinee season opener, the right-hander hoping to build off his really strong start last week against the Mariners. And Dusty Baker, of course, is back in the dugout after spending the weekend out this way attending his son's high school graduation. Chris Speier, owner of a 2-1 record, returns to his usual bench coach role.

WASHINGTON NATIONALS at SAN FRANCISCO GIANTS
Where: AT&T Park, San Francisco
Gametime: 4:05 p.m. EDT
TV: MASN2, Ch. 9, ESPN, MLB.tv
Radio: 106.7 FM, 1500 AM, XM 89/869, MLB.com
Weather: Cloudy, 59 degrees, wind 18 mph out to left field

NATIONALS (30-19)
SS Trea Turner
LF Jayson Werth
RF Bryce Harper
1B Ryan Zimmerman
2B Daniel Murphy
3B Anthony Rendon
C Matt Wieters
CF Michael A. Taylor
RHP Tanner Roark

GIANTS (22-30)
CF Denard Span
2B Joe Panik
1B Brandon Belt
C Buster Posey
SS Brandon Crawford
RF Justin Ruggiano
3B Chrisian Arroyo
LF Mac Williamson
LHP Matt Moore