With their 10-5 win over the Dodgers on Tuesday night at Chase Field, the first-place D-backs have now won five straight games.
More importantly than the number of wins is that they've come against National League West rivals Colorado and Los Angeles, two of the teams the D-backs figure to be battling in what is expected to be a nip-and-tuck race.
"Winning these games are important because not only do we get a win but someone in our division is getting a loss," third baseman Mark Reynolds said.
Reynolds once again helped set the tone for victory with a three-run homer in the first, his Major League-leading fifth of the year, as Arizona jumped out to a 3-0 advantage.
"That's huge to get off to a start like that," D-backs manager Bob Melvin said, referring to the game, though he could just have easily been talking about the season. "It's fitting that he did it. He's been the guy that's been coming up big for us early in games."
The D-backs' offense has come alive during their hot streak, averaging nearly eight runs a game. They've done it in large part via the home run as they lead the Majors with 17.
After losing two of three to open the season in Cincinnati, the D-backs began a stretch of 22 straight division games by sweeping the Rockies in Colorado. When you consider that last year just 1 1/2 games separated the top three teams in the division, it's obvious how critical these head-to-head matchups are.
"It's important to jump out to an early lead because if we struggle at some point, and hopefully that won't happen, but if it does we'll have a little bit of a cushion," Reynolds said.
Doug Davis (1-1), pitching for the final time before undergoing surgery to remove a cancerous thyroid gland, held the Dodgers to just two runs in six innings of work. He was treated to a standing ovation from the 28,973 at Chase Field, who kept cheering until he reappeared from the dugout for a curtain call.
The D-backs put the game away in the bottom of the seventh when they scored four times. The first run came when Orlando Hudson drew a bases-loaded walk from Ramon Troncosco, and Conor Jackson capped the frame with a three-run triple down the left-field line.
"Everybody in the lineup is swinging a good bat right now," Hudson said. "That's the way this game goes. It's a funny thing. We're winning in our division right now and we've got to ride this tide while it's high. You've got to ride it while you can, because everybody knows baseball is hard. We've got a long way to go and we just need to try and keep it going and have fun while it's going, because there are going to be some days when it's going to be rough. Momma always said you'd have tough days. She just never said how many."
So far this year the rough days have been rare for the D-backs.
Steve Gilbert is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.