Friday night’s series opener was one to forget. MacKenzie Gore was great but had to depart in the seventh when his left leg tightened up, five innings after he was struck by a comebacker. The Nationals bullpen quickly gave up four runs after the starter left. The lineup did nothing all night against Landen Roupp and the Giants bullpen. And so the five-game winning streak ended.

The Nats will try to bounce back this afternoon and not let this devolve into a losing streak, hoping for a better offensive showing against Kyle Harrison. The left-hander has pitched exclusively out of the bullpen so far this season, but with Justin Verlander hurt, San Francisco needs a spot starter and is turning to Harrison, who did make 31 big league starts the last two seasons. That includes a pair of outings last year against the Nationals, during which he allowed five runs over 10 2/3 innings, striking out 11 without issuing any walks.

Jake Irvin gets the start for the Nats, and he’s coming off a really sharp one at Camden Yards in which he allowed two runs over 6 1/3 innings to earn his third win of the season. Most impressive, Irvin rediscovered his swing-and-miss stuff, getting six strikeouts after totaling only three across his previous three starts. That’ll be something to watch today.

WASHINGTON NATIONALS vs. SAN FRANCISCO GIANTS
Where: Nationals Park
Gametime: 4:05 p.m. EDT
TV: MASN2, MLB.tv
Radio: 106.7 FM, 87.7 FM (Spanish), MLB.com
Weather: Mostly sunny, 70 degrees, wind 15 mph left to right field

GIANTS
RF Mike Yastrzemski
LF Heliot Ramos
RF Jung Hoo Lee
DH Wilmer Flores
3B Matt Chapman
SS Willy Adames
1B LaMonte Wade
C Patrick Bailey
2B Tyler Fitzgerald

LHP Kyle Harrison

NATIONALS
SS CJ Abrams
3B Amed Rosario
DH James Wood
1B Nathaniel Lowe
C Keibert Ruiz
LF Alex Call
2B Luis García Jr.
RF Daylen Lile
CF Robert Hassell III

RHP Jake Irvin