Chris Young hit a two-run homer, Conor Jackson connected for the second consecutive game and the Arizona Diamondbacks beat the San Francisco Giants 8-2 on Tuesday.

Micah Owings (3-0) struck out six in six innings and didn't give up a hit until Eugenio Velez singled leading off the fourth. The right-hander won his fifth straight start dating to last September and didn't allow a baserunner past first until Fred Lewis went from first to third on Velez's sixth-inning double. Aaron Rowand followed with an RBI groundout.

Owings gave up one run and three hits with two walks.

Jackson had three RBIs for the Diamondbacks (10-4), who bounced back from a loss in Monday's series opener to spoil the Giants' celebration 50 years after major league baseball moved to the West Coast when the Giants and Los Angeles Dodgers relocated from New York.

Jackson hit a solo homer leading off the second, drew a bases-loaded walk in the fifth and doubled in a run in the ninth to follow his three-RBI game from Monday with another impressive performance.

Young hit his third career home run in his first eight at-bats off Kevin Correia (1-2), who allowed five runs and five hits in six innings, struck out six and walked three.

Eric Byrnes drove in a run with a bases-loaded bloop single to center in the fifth that Rowand almost got under. Orlando Hudson singled home a run in the seventh and Stephen Drew added an eighth-inning sacrifice fly.

John Bowker, who became the first Giants player to homer in his first two games last weekend, hit his first career triple leading off the seventh against Tony Pena and singled in the ninth. Jose Castillo drove Bowker home.

The Diamondbacks' Young, Byrnes, Hudson and Justin Upton all wore No. 42 in honor of Jackie Robinson Day. Ray Durham sported the number for San Francisco as baseball celebrated Robinson breaking the color barrier on April 15, 1947.

Tuesday also marked the 50th anniversary of the first game played by the Giants at Seals Stadium, where they faced the Dodgers on April 15, 1958. San Francisco formally recognized the club's move West with a pregame ceremony. There also was an earlier celebration held at the exact location where Seals Stadium used to stand, and a commemorative plaque was laid in the ground.

The first pitch was thrown at the exact same time of that 1958 game, too: 1:34 p.m.

Diamondbacks manager Bob Melvin held third baseman Mark Reynolds out of the lineup as a precaution after he had a scary fall over the railing of a photo well Monday night.

"He's a little banged up," Melvin said. "He could play. His back's a little bit sore and his shin is sore. He'll be back in there tomorrow. That was scary. We were lucky."

Notes:@ Bowker is 6-for-10 with seven RBIs in his first three major league games. ... Correia has never beaten Arizona in 11 career outings. ... The Giants are waiting until Wednesday to activate RHP Vinnie Chulk (strained throwing shoulder) from the disabled list, perhaps trying to make a trade before bringing him back. ... San Francisco LHP Noah Lowry, recovering from forearm surgery, hopes to begin throwing off a mound as soon as this weekend.

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