SAN FRANCISCO (AP) -- Ryan Vogelsong broke his throwing hand on a swing after pitching himself toward his first win in seven starts, and the San Francisco Giants returned from a terrible road trip to beat the Washington Nationals 8-0 on Monday night.
The right-hander fouled a ball off his right hand in the bottom of the fifth and grimaced in pain while grabbing the hand. He was quickly examined near the batter's box and left the game. The Giants later announced the injury, without immediately providing any other details.
Vogelsong (2-4) snapped a six-start winless stretch with just his second victory of 2013 and first since April 11 against the Cubs at Wrigley Field and seemed back on track.
He walked off to warm ovation as Nick Noonan pinch hit. Vogelsong allowed three hits in five scoreless innings and lowered his ERA from 8.06 to 7.19.
Brandon Belt hit a solo home run, matched his career best with four hits and scored three runs as San Francisco pounded a season-high 17 hits. Angel Pagan hit an RBI double and two-run single for San Francisco, also making a great leaping catch against the center-field wall.
Andres Torres had three hits and drove in a run and Marco Scutaro added an RBI single among his two hits.
Vogelsong got the defensive gem from Pagan when the center fielder slammed into the wall on Adam LaRoche's deep fly in the second.
The 2011 All-Star ended a six-start winless stretch in which he had lost his last two outings and gone 0-3. He was tagged for eight runs -- three earned -- and six hits in two innings for his shortest outing of the year last Wednesday at Toronto.
Javier Lopez took over for Vogelsong in the top of the sixth and received a little bit more warm up time. Three relievers finished for the Giants' sixth shutout. San Francisco snapped a three-game skid after a 1-5 road trip through Toronto and Colorado.
Bryce Harper went 0 for 4 in his return to the Nationals' lineup after last season's NL Rookie of the Year missed two games with a bruised left knee. He was hurt in a hard collision with the outfield wall a week earlier at Dodger Stadium that also caused him to need 11 stitches on his chin.
Left-hander Zach Duke (0-1) lasted just 3 1-3 innings in a spot start for Ross Detwiler, who is sidelined with back spasms. Duke allowed four runs and seven hits in his first start of the year.
Washington was shut out for the sixth time.
Vogelsong retired the first eight Nationals hitters in order.
The right-hander lasted only 2 2-3 innings in his first career start against Washington last year, allowing eight runs on nine hits with two walks.
Pagan started in center field and batted leadoff after a stomach bug forced him out of Sunday's 5-0 loss at Colorado in the fifth inning.
Third baseman Pablo Sandoval and manager Bruce Bochy also were ill
"I don't know how many guys are catching the crud. Pablo's feeling it, along with myself," Bochy said.
Scutaro extended his hitting streak to 18 games with a third-inning single. The second baseman fielded Roger Bernadina's grounder in the fifth but dropped the ball in exchange from glove to hand, for the Giants' 15th error in their last eight games.
Notes: Nationals OF Jayson Werth, on the 15-day disabled list with a strained right hamstring, is expected to need at least two more weeks to heal after a second MRI showed he "has some problems in there," Johnson said. "He's going to rest a bit." ... A moment of silence was held for the Oklahoma tornado victims before the national anthem. ... RHP Matt Cain (3-2) starts for the Giants in Tuesday night's middle game against righty Stephen Strasburg (2-5). ... San Francisco's Buster Posey has hit safely in 11 of his last 12. ... Belt's homer was the Giants' 21st at home. Last season through their first 23 games at AT&T Park, they had hit just six HRs.