SAN FRANCISCO — Wilmer Flores hit a go-ahead, bases-loaded single in San Francisco’s four-run sixth inning, Brandon Crawford added an RBI hit two batters later and the Giants beat the Arizona Diamondbacks 6-4 on Tuesday night.
Luke Weaver finished with 4.0 innings pitched, one earned run, six strikeouts, four walks and three hits allowed for Arizona.
The NL West-leading Giants (103-54) maintained a two-game division lead over the rival Dodgers, who beat the Padres at home. Los Angeles (101-56) has won the last eight West crowns.
San Francisco matched the 1993, 1962 and 1912 clubs for third-most wins in team history, trailing only 1905 (105) and 1904 (106).
The Giants loaded the bases in the sixth against Sean Poppen (1-1), starting with Evan Longoria reaching on a throwing error by shortstop Josh Rojas. Buster Posey drew a bases-loaded walk in the inning and later scored on a wild pitch.
Mike Yastrzemski drew a bases-loaded walk in the first from Luke Weaver, and the D-backs tied it on a sacrifice fly by Rojas in the third.
Jake McCarthy homered in the seventh for the D-backs.
José Álvarez (5-2) pitched a 1-2-3 sixth for the win. Camilo Doval allowed a one-out double to pinch-hitter Geraldo Perdomo before finishing for his first career save.
Logan Webb struck out six and walked two, not allowing an earned run over five innings in a third straight no-decision and fourth in his last six starts. He remained unbeaten since a loss May 5 at Colorado. Arizona used an entirely left-handed lineup against Webb, with Ketel Marte the lone switch-hitter among the starters.
Webb, facing Arizona for the first time this season and only the third time ever, escaped a bases-loaded jam in the fourth unscathed when he induced Josh VanMeter’s inning-ending double play.
The Giants found enough offense without first baseman and home run leader Brandon Belt, who broke his left thumb while squaring to bunt in the seventh inning of Sunday’s 6-2 win at Colorado.
The D-backs (50-107) need two wins over their final five games to avoid breaking the franchise record for losses of 111 set in 2004.
UP NEXT
Arizona RHP Merrill Kelly (7-11, 4.59) pitches Wednesday with a three-start losing streak and has gone 0-4 over his last five starts since beating the Cubs at Wrigley Field on July 24.
LHP Alex Wood (10-4, 4.00) takes the mound for the Giants in his third start back from an absence with COVID-19.