Giants 5, Reds 3

SAN FRANCISCO -- Bruce Bochy recorded the 1,500th win of his managerial career Tuesday night when the San Francisco Giants, batting first at home for the first time since moving west, used a three-run first inning as a springboard to a 5-3 victory over the Cincinnati Reds in the nightcap of a doubleheader.

Left-hander Tony Cingrani (4-1) held the Giants to two runs in 6 2/3 innings and recorded his first career RBI with a third-inning single as the Reds rolled to a 9-3 victory in the first game.

In a nightcap featuring the Reds in their home red tops and San Francisco in its road grays because it was the makeup of a July 4 rainout in Cincinnati, the Giants built a pair of three-run leads and then got 4 1/3 innings of shutout relief from five relievers en route to the manager's milestone win.

Bochy became just the 21st skipper -- the third still active -- to reach 1,500 wins. One of the men ahead of him -- former Giants manager Dusty Baker (1,638) -- had twice denied Bochy his historic win from the other dugout in the first two games of the series.

Right-hander Jake Dunning retired one batter and bailed starter Barry Zito out of a fifth-inning jam. Jose Mijares, Santiago Casilla (4-2), Javier Lopez and Sergio Romo followed Dunning to the mound and protected the 5-3 lead.

Romo got the final four outs -- all strikeouts -- for his 24th save, snapping a three-game Giants losing streak.

Todd Frazier had three hits, including a pair of doubles, for the Reds, who stranded 14 baserunners, including two apiece in the third, fourth, fifth, sixth and eighth innings. Jay Bruce also had three hits, all singles, as the Reds out-hit the Giants 10-9.

Right-hander Greg Reynolds (0-1), making his Reds debut, took the loss. He gave up five runs in five innings, including three runs on three hits in the top of the first.

Pablo Sandoval had the big hit of the inning, a two-run double that plated Tony Abreu and Buster Posey to open the scoring. Hunter Pence, Gregor Blanco and Brandon Belt also drove in runs for the Giants, who had been outscored 34-6 in five consecutive losses to the Reds.

Zito helped his own cause in the second, providing a sacrifice bunt after Brandon Crawford's inning-opening double. Crawford scored from third on Gregor Blanco's one-out sacrifice fly for a 4-0 lead.

But the Reds, who had scored 20 runs in the first two games of the series, weren't about to settle for a doubleheader split quietly. They trimmed their deficit in half in the last of the second, getting to Zito for three hits, including a two-run double by backup catcher Corky Miller.

After the Giants had padded their lead to 5-2, the Reds ended Zito's night one out shy of the minimum required to get a win. Todd Frazier's two-out double scored Jay Bruce in the fifth, prompting Giants manager Bruce Bochy to call upon right-hander Jake Dunning.

Zito pitched 4 2/3 innings, giving up three runs on six hits. Failing to pick up his fifth win for a ninth consecutive start, the left-hander struck out four and walked three.

In the opener, the Reds supported Cingrani with a 15-hit attack, nine of which came in the second and third innings against Giants starter Eric Surkamp (0-1). Shortstop Zack Cozart drove in two runs with four hits, including a solo home run in the fifth inning, and catcher Devin Mesoraco homered for the second day in a row, a three-run blast in the second, among three hits.

Joey Votto also homered for the Reds, his 16th of the season, a solo shot that led off the third. Frazier added two hits and two RBI.

NOTES: Both starting pitchers in Game 1 were promoted from Triple-A before the game as a 26th man on the roster, allowable for double-headers. Cingrani was demoted in between games so that the Reds could use the same allowance to call up Reynolds from Triple-A Louisville and start him in Game 2. ... Reds CF Shin-Soo Choo went 0-for-3 in the opener, snapping his 16-game hitting streak. ... Before the first game, the Giants sent RHP George Kontos to Triple-A Fresno after he threw a career-high 63 pitches in relief of RHP Tim Lincecum in Monday's 11-0 loss. RHP Yusmeiro Petit was summoned from Fresno to take his place and saw immediate action, replacing Surkamp in the third inning and providing 5 1/3 innings of two-run relief. ... San Francisco designated RHP Hunter Strickland, who had been pitching for Class A San Jose, for assignment to create a spot on the 40-man roster for Petit. ... Former San Francisco closer Brian Wilson is scheduled to throw for major league teams Thursday in Los Angeles after having held a private session for the Giants on Monday in San Francisco. Wilson hasn't pitched in game action since April 12, 2012, when he injured his right (pitching) elbow and subsequently underwent a second Tommy John surgery.