SAN FRANCISCO -- The Cincinnati Reds didn't hit San Francisco Giants ace Madison Bumgarner hard Friday night. But they did hit him often.
In the end, quantity mattered, especially with their own All-Star candidate, Johnny Cueto, on the mound.
Center fielder Billy Hamilton contributed a two-run single to a six-hit, five-run fifth inning and Cueto won his third consecutive decision with 8 1/3 strong innings, lifting the Reds to a second straight win over the Giants with a 6-2 victory.
In winning for the ninth time in their last 12 games, the Reds assured themselves of a seventh consecutive non-losing series with back-to-back wins to open the four-game series.
"It's not always going to be Joey (Votto) and Jay (Bruce) and Rocco (Devin Mesoraco) getting the big hits," said Reds shortstop Zack Cosart, who for the second night in a row added to the Cincinnati attack with an RBI single. "We have a bunch of good hitters in the lineup."
The Reds' win followed the announcement of the signing of Cuban right-hander Raisel Iglesias to a reported seven-year, $27 million contract. The 24-year-old Iglesias, who has defected to Haiti, is expected to join the Reds at the start of next season.
Hamilton's hit was one of six the Reds had against Bumgarner (9-5) in the five-run fifth inning after the teams had been scoreless through four innings. Cosart, third baseman Todd Frazier and Bruce also had RBI hits in the uprising, which featured only one extra-base hit -- an inning-opening double by Mesoraco.
"Bumgarner has given us trouble. He's very, very good," Reds manager Bryan Price said. "The guys went in there with a good approach, a good plan of attack. We took advantage of the few mistakes he (Bumgarner) made."
Frazier had three of Cincinnati's 12 hits while extending his hitting streak against the Giants to 14 games. He is hitting .462 (24-for-52) over that stretch.
Hamilton added three singles for the Reds and Bruce had two on a night when he nonetheless saw his streak of seven consecutive games with an extra-base hit halted.
"The month of June has been good for us," said Price, whose club has the most wins in the majors (18) since May 30. "We're just getting good at-bats up and down the lineup. We've been patiently waiting for it."
In nearly going the distance for the fourth time this season, Cueto (8-5) allowed both Giants runs, three hits and two walks. He struck out three.
Left-handed closer Aroldis Chapman relieved Cueto with two on and one out in the ninth and retired both men he faced for his 16th save, getting a nice defensive play from Cosart at shortstop to short-circuit a potential Giants rally.
"It's been frustrating at times when he's pitched well and we haven't scored runs for him," Cosart said of Cueto, whose has a 1.98 ERA in five career starts against the Giants. "When you've got your horse on the mound, getting five runs (in one inning) is big. You don't want to coast, but you know it gives you a great chance to win."
Pinch-hitter Tyler Colvin did the Giants' only real damage against Cueto, ending his shutout bid in the sixth with an RBI triple that scored second baseman Brandon Hicks. Colvin eventually scored on right fielder Hunter Pence's infield out, temporarily getting the Giants back within three at 5-2.
Bruce's second RBI single, off Giants right-handed reliever Yusmeiro Petit, scored Frazier and upped the lead to 6-2, completing the scoring.
"I wouldn't call it a team-wide slump," Colvin said after the Giants lost for the 10th time in their last 12 home games, a stretch in which they've been outscored 60-36. "It just doesn't seem like we can string hits together like they did tonight. They didn't hit the ball that hard."
Bumgarner left for a pinch hitter after having given up nine hits and season-high-tying five runs in six innings. He walked one and struck out three.
The Giants, leaders of the National League West, lost for the ninth time in their last 13 games. Their 4-9 record during that stretch is the worst in the majors.
Despite having allowed three singles, Bumgarner had faced just one batter above the minimum through four innings before the fateful fifth.
After Cosart's one-out single plated Mesoraco to open the scoring, the inning took on greater life when the Giants failed to get an out on a sacrifice bunt attempt by Cueto. Catcher Buster Posey threw late to third in an attempt to force out left fielder Chris Heisey, allowing Cueto to reach safely to load the bases with still just one out.
Then came the avalanche of hits, with Hamilton's bloop single over a drawn-in infield scoring two runs to increase the lead to 3-0. Frazier and Bruce added run-scoring singles, capping the game-changing assault.
NOTES: Once visa issues are resolved in Haiti, the Reds are expected to send Cuban RHP Raisel Iglesias to their academy in the Dominican Republic, with an eye on having him at spring training next February. Iglesias, projected by the Reds as a starter, allowed two runs and three hits in 4 2/3 innings of relief at the World Baseball Classic last spring. ... OF Roger Bernadina became a free agent Friday after refusing the Reds' outright assignment to Triple-A Louisville. Bernadina, who hit .153 in 44 games this season, was designated for assignment last weekend. ... The Reds went 6-for-11 with runners in scoring position. Since June 1, Cincinnati has recorded a National League-best .333 batting average under those circumstances. … The five-run fifth inning marked the fourth time Giants LHP Madison Bumgarner has allowed at least five runs in an inning in his career. ... Giants LHP Madison Bumgarner picked off two Reds baserunners in the first inning. The last Giant to accomplish that feat was LHP Bud Black on May 15, 1992.