PHOENIX (AP) -- Look who's the power-hitting team out of the gate in this young baseball season.
The Arizona Diamondbacks, the worst-hitting team in the National League a year ago, are pounding out the big hits on a four-game winning streak.
"Offensively we're starting to mature a little bit," Arizona manager Bob Melvin said. "We have to keep it going, but the results early on here have been pretty good."
Orlando Hudson had a two-run homer, and Chris Young added a solo shot and an RBI single after agreeing to a six-year contract extension earlier in the day. Reynolds and Young each have four home runs in Arizona's seven games.
Reynolds has nine RBIs for a young team that learned a lot in their run to the NLCS last year, when Arizona had the NL's best record but worst batting average.
"A lot of guys got some more time under their belts," Reynolds said. "Everybody's got more experience, and with that comes confidence, and you really see it in the results."
Dan Haren gave up three runs -- one earned -- in six innings to get his first Arizona victory. Haren (1-0), acquired in a trade with Oakland in the offseason, allowed six hits, struck out five and walked none.
Dodgers first-year manager Joe Torre knew from his Yankees days what Haren can bring.
"He makes pitches when he has to," Torre said. "I've seen him sharper, but the one thing about it is he may bend but he doesn't break. He's a very tough competitor."
Reynolds, who had homered in the ninth in Arizona's 10-inning win at Colorado on Sunday, hit a first-inning two-run shot off Esteban Loaiza some 455 feet deep into the left-field stands. His opposite-field solo homer off Chan Ho Park in the sixth barely cleared the right-field fence.
Jeff Kent drove in two runs with a homer and RBI single for Los Angeles.
Arizona's Justin Upton went 3-for-4 with a double but his throwing error resulted in two runs in the sixth.
The Diamondbacks unveiled their NL West champion banner, their fourth in the franchise's 10-year history, in front of a capacity crowd of 49,057, then scored four runs by the time Loaiza threw his 11th pitch.
"I had the chills, I really did, running out there," Haren said. "I was happy I was able to give a good performance, but I think tonight I'd really tip my hat to the hitters."
Young led off with a walk, then scored when Eric Byrnes tripled to right-center.
Hudson hit the next pitch into left for an RBI single. After Conor Jackson popped out, Reynolds slammed the first pitch he saw into the seats, and it was 4-0.
Loaiza (0-2) settled down to retire 10 straight before being lifted for a pinch-hitter with two outs and nobody on in the fifth. He threw just 53 pitches, allowing four runs on four hits, and said he "had no clue" why he was taken out of the game.
Torre said he was just trying to get the Dodgers' offense moving.
"It was just a matter of trying to get something going," he said.
The Dodgers cut it to 4-1 on Kent's second homer of the season, a two-out solo shot on a 1-2 pitch from Haren in the fourth, then Upton's errant throw from right field over the head of the third baseman Reynolds led to two unearned runs that cut the lead to 4-3 in the sixth.
"It was kind of a fluky thing but throughout that I still felt we were in control of the game," Haren said. "Once we got through that inning we added on, and we were home from there."
Reynolds' second homer made it 5-3, then Young and Hudson hit home runs off Scott Proctor in the seventh to blow open an 8-3 advantage.
The Dodgers remained in their offensive rut.
"We're going to hit. It's just a matter of when that's going to happen," Torre said. "Unfortunately, we had too high a mountain to climb tonight."
Torre left slumping outfielder Matt Kemp (.125) out of the lineup, but he had a pinch-hit single in the seventh. ... On Tuesday night, Arizona LHP Doug Davis will get his last start before undergoing surgery for thyroid cancer.