Every team cools off, they insist, it's just a matter of time.

And even though it's true, the more the D-backs swing the bat like they did again Saturday, in a 10-3 drubbing of the Rockies, you can't help but wonder.

"There's no question there will be times things won't go our way," second baseman Orlando Hudson said. "That's the way the game goes. That's a part of it. You're going to have some games where you tear the cover off, and also some games where you just can't find it."

Not only are the D-backs finding it, they're doing so without making it seem like they're even looking.

"Everything is in sync with them right now," Rockies manager Clint Hurdle said.

The D-backs have now won eight straight games and are on the verge of sweeping the Rockies for the second time in a week. Meanwhile, they lead baseball in runs scored while also having allowed the fewest runs.

It's a recipe that has yielded the best record in baseball at 9-2.

And it brings a smile to Arizona manager Bob Melvin's face, right up until the time the superstitious skipper has to answer questions about it.

"I don't even like to talk about it anymore," Melvin said. "We just seem to be scoring runs and doing it in bunches and hitting the homers and getting the big hits. It's nice to see."

Unless, of course, you're the Rockies.

"They're playing real well and we are not, and that's obviously not a good combination," first baseman Todd Helton said.

With the D-backs up, 4-1, it was right fielder Justin Upton that made things comfortable when he blasted a three-run homer in the fifth. It was the fifth home run of the year for the 20-year-old, who raised his average to .415 after going 3-for-3.

"I'm just playing ball," Upton said. "I'm just feeling comfortable at the plate and that's always a plus. Right now, I'm just seeing the ball and hitting it."

Not just hitting it -- hitting it a long way. The strength and power he possesses were obvious on his home run, which he didn't get all of, but still managed to hit it to the left of the batter's eye, 429 feet away.

It's the potential the D-backs saw in him when they selected him with the No. 1 overall pick in the 2005 First-Year Player Draft, and why they called him to the big leagues last August at age 19.

"He's riding a wave of confidence," Melvin said. "Yet, when you talk about what the upside of this guy is and what kind of player he's going to be down the road, I think you're getting a little bit of a glimpse of it. This guy's going to get better and better. I don't know that it's going to get better than you see right now, but we're getting a glimpse of what this guy potentially could be."

The offense provided more than enough support for starter Dan Haren to earn his second straight win. The Rockies made him work, putting at least two men on base in the second, third and fourth innings, but he was able to hold them to just one run in six innings.

"We're swinging the bats just outstanding, better than any team in the league," said Haren, who came over from Oakland in an eight-player deal in December. "We're swinging it for power, we're taking our walks, which is just as impressive to me. They're making it easier on the pitchers."

The D-backs have made a habit of jumping out to early leads, as they've outscored opponents, 15-3, in the first inning this year.

"No one is overthinking, we're just going out and having fun," said third baseman Mark Reynolds, who also has five homers [x on the year]. "There's always going to be ups and downs. We might lose 10 in a row starting tomorrow, you just never know. So we have to ride it while we can and keep swinging."

And the way they've been swinging it lately has been bad news for their opponents.