PHOENIX -- Remaining calm in the batter's box has had an electrifying effect on Cody Ross.
The Diamondbacks right fielder continued a recent tear with a three-run home run Tuesday, leading Arizona to a 6-1 victory over the Tampa Bay Rays at Chase Field.
Ross has 14 hits in his past 31 at-bats (.452), with three homers and 11 RBIs.
"The one thing that I concentrate on when I step in the box is just being calm and not having too much movement," he said. "When you have a lot of movement, a lot of things can go wrong with your swing.
"So standing there, as quiet as I possibly can, as relaxed as I possibly can, and try to see a pitch I can handle. That's getting back to basics and not worrying about the stuff that a lot of us worry about at times."
Eric Chavez hit run-scoring doubles in the fourth and fifth innings for the D-backs (57-55), who had lost six of their previous eight games and were in danger of falling to .500 for the first time since the second game of the season.
Tampa Bay (66-46) has won 25 of its last 32. The Rays are a major-league-best 52-28 since May 8.
Arizona left-hander Wade Miley (9-8) gave up one run and five hits in seven innings, striking out five and walking two. He threw 6 1/3 scoreless innings in a 7-0 victory over the Rays in St. Petersburg, Fla., on July 31.
Miley has won five of his last six starts, and his ERA in 12 starts since June 5 is 2.34.
"Just more aggressive. Confidence. Going right after guys. Just trying not to do too much," Miley said. "Earlier I was getting upset with myself when I had one or two minor mistakes, and it was causing things to escalate."
Evan Longoria hit his 22nd homer of the season in the fourth inning. The Rays' other six hits were singles, and they did not get another runner past second base.
Longoria snapped an 0-for-19 skid with an RBI single against the San Francisco Giants on Sunday after hitting .194 in July.
"He looks really good, and not just because he hit a home run," Tampa Bay manager Joe Maddon said. "The approach is better, that whip at the end of the bat seems to be back. He looks a lot more confident. He will be fine."
Rays right-hander Jeremy Hellickson (10-5) gave up five runs in 4 2/3 innings, his second straight loss to the D-backs after giving up four runs in 4 1/3 innings against Miley in his last start. Those are Hellickson's two shortest outings of the season.
Hellickson walked three, and all three scored.
"I feel good, but my command is a little off right now," he said. "It is pretty embarrassing not being able to get through the fifth, two games in a row."
Catcher Wil Nieves had two of the D-backs' eight hits, and Martin Prado finished the scoring with an RBI double in the seventh inning.
Paul Goldschmidt walked to open the last of the fourth off Hellickson and scored on Chavez's double into the right field corner. After Aaron Hill walked on a 3-2 pitch, Ross hit his eighth homer of the season to make it 4-1.
Hellickson got his first major league hit in the fifth inning, singling off shortstop Didi Gregorius' glove.
NOTES: OF Desmond Jennings, the Rays' leadoff hitter, was placed on the disabled list with fractured left middle finger late Monday, and Tampa Bay purchased the contract of OF Jason Bourgeois from Triple-A Durham to fill the roster spot. "Don't expect him to be gone too long, hopefully not a lot longer than a regular 15-day DL," Maddon said of Jennings. ... Arizona C Miguel Montero was given an epidural on his sore back Friday and doctors found a slightly bulging disk, according to D-backs manager Kirk Gibson. "He has no numbness or anything like that, so it does not appear that it is serious," Gibson said. Montero, out since July 29, has not returned to baseball activity. ... Tampa Bay RHP Chris Archer, who will start the second game of the series Wednesday, swept AL awards Tuesday, when he was named Pitcher of the Month and Rookie Pitcher of the Month. Hellickson (May 2011) and Florida LHP Dontrelle Willis (June 2003) are the only other pitchers to win both awards since monthly honors were instituted in 2001. Archer went 4-0 with an 0.73 ERA in five July starts covering 37 innings.