• Patrick Corbin after loss to Marlins

    Patrick Corbin after loss to Marlins

  • Torey Lovullo on Patrick Corbin's outing vs. Marlins

    Torey Lovullo on Patrick Corbin’s outing vs. Marlins

  • Torey Lovullo on Nick Ahmed, comeback win over Marlins

    Torey Lovullo on Nick Ahmed, comeback win over Marlins

  • David Peralta talks about Chris Owings' 'clutch' hit vs. Pirates

    David Peralta talks about Chris Owings’ ‘clutch’ hit vs. Pirates

  • Chris Owings on D-Backs' extra-inning win in Pittsburgh

    Chris Owings on D-Backs’ extra-inning win in Pittsburgh

  • Torey Lovullo on 'character win' in Pittsburgh

    Torey Lovullo on ‘character win’ in Pittsburgh

  • Robbie Ray on postgame celebration after shutout vs. Pirates

    Robbie Ray on postgame celebration after shutout vs. Pirates

  • Torey Lovullo on Robbie Ray's shutout of Pirates

    Torey Lovullo on Robbie Ray’s shutout of Pirates

  • Chris Herrmann on Robbie Ray's 'outstanding' outing vs. Pirates

    Chris Herrmann on Robbie Ray’s ‘outstanding’ outing vs. Pirates

  • Shot Clock: Winless weekend with D-Backs

    Shot Clock: Winless weekend with D-Backs

  • Diamondbacks' Chris Iannetta on his latest clutch homer

    Diamondbacks’ Chris Iannetta on his latest clutch homer

  • Torey Lovullo on Diamondbacks' loss to the Pirates

    Torey Lovullo on Diamondbacks’ loss to the Pirates

  • Archie Bradley after walkoff loss to Pirates

    Archie Bradley after walkoff loss to Pirates

  • Torey Lovullo on Patrick Corbin's outing, loss to Brewers

    Torey Lovullo on Patrick Corbin’s outing, loss to Brewers

  • Patrick Corbin on his outing vs. Brewers

    Patrick Corbin on his outing vs. Brewers

  • Zack Greinke on his outing in loss to Brewers

    Zack Greinke on his outing in loss to Brewers

  • Torey Lovullo on loss to Brewers, Chase Anderson

    Torey Lovullo on loss to Brewers, Chase Anderson

  • Paul Goldschmidt talks about Chase Anderson's outing

    Paul Goldschmidt talks about Chase Anderson’s outing

  • Torey Lovullo on D-Backs' comeback win in MIlwaukee

    Torey Lovullo on D-Backs’ comeback win in MIlwaukee

  • Chris Iannetta on his game-tying homer vs. Brewers

    Chris Iannetta on his game-tying homer vs. Brewers

  • Can D-Backs keep this up? Why, why not

    Can D-Backs keep this up? Why, why not

  • Robbie Ray after dominant outing in Milwaukee

    Robbie Ray after dominant outing in Milwaukee

  • D-Backs' Torey Lovullo on impressive win over Brewers

    D-Backs’ Torey Lovullo on impressive win over Brewers

  • Torey Lovullo on 'nice team win' for D-Backs

    Torey Lovullo on ‘nice team win’ for D-Backs

  • Jake Lamb on strong game against lefty Jose Quintana

    Jake Lamb on strong game against lefty Jose Quintana

  • Chris Herrmann on hitting surge, HR in win

    Chris Herrmann on hitting surge, HR in win

  • Arizona Diamondbacks pitcher Archie Bradley competes in cow milking competition

    Arizona Diamondbacks pitcher Archie Bradley competes in cow milking competition

  • Shelby Miller: Tommy John surgery 'was a pretty smooth process'

    Shelby Miller: Tommy John surgery ‘was a pretty smooth process’

  • Shot Clock: Time to take D-Backs seriously

    Shot Clock: Time to take D-Backs seriously

  • Zack Greinke on near-complete game, Eephus pitch

    Zack Greinke on near-complete game, Eephus pitch

  • Torey Lovullo on Zack Greinke's 'great night'

    Torey Lovullo on Zack Greinke’s ‘great night’

  • Montini volunteers free tickets - with Bickley's help

    Montini volunteers free tickets – with Bickley’s help

  • D-Backs manager Torey Lovullo on loss vs. Padres

    D-Backs manager Torey Lovullo on loss vs. Padres

  • Chris Iannetta on homering in first game off DL

    Chris Iannetta on homering in first game off DL

  • Zack Godley on his outing vs. Padres

    Zack Godley on his outing vs. Padres

  • Torey Lovullo after D-Backs pound Padres 9-1

    Torey Lovullo after D-Backs pound Padres 9-1

  • Torey Lovullo on D-Backs' blowout win vs. Padres

    Torey Lovullo on D-Backs’ blowout win vs. Padres

  • Taijuan Walker tosses six scoreless vs. Padres

    Taijuan Walker tosses six scoreless vs. Padres

  • Brandon Drury homers in win vs. Padres

    Brandon Drury homers in win vs. Padres

  • Watch out for Dodgers; Cards CBs apply for job

    Watch out for Dodgers; Cards CBs apply for job

  • Diamondbacks outlast Mets in extra innings

    Diamondbacks outlast Mets in extra innings

  • Diamondbacks discuss close win over Mets

    Diamondbacks discuss close win over Mets

  • Diamondbacks' Zack Godley talks after win over Mets

    Diamondbacks’ Zack Godley talks after win over Mets

  • Diamondbacks' Torey Lovullo talks upbeat pace in win over Mets

    Diamondbacks’ Torey Lovullo talks upbeat pace in win over Mets

  • A.J. Pollock discusses his injury after loss to Pirates

    A.J. Pollock discusses his injury after loss to Pirates

  • David Peralta downplays his injury vs. Pirates

    David Peralta downplays his injury vs. Pirates

  • Torey Lovullo on injuries, loss vs. Pirates

    Torey Lovullo on injuries, loss vs. Pirates

  • Chris Iannetta talks about scary HBP vs. Pirates

    Chris Iannetta talks about scary HBP vs. Pirates

  • Diamondbacks rally falls short against Pirates

    Diamondbacks rally falls short against Pirates

  • Lovullo: Iannetta "said he could play tonight if he had to" after HBP

    Lovullo: Iannetta “said he could play tonight if he had to” after HBP

  • Diamondbacks overwhelm Pirates 11-4

    Diamondbacks overwhelm Pirates 11-4

  • Kaepernick blackballed? Greinke now trade bait?

    Kaepernick blackballed? Greinke now trade bait?

  • Zack Greinke on his near no-hitter against Pirates

    Zack Greinke on his near no-hitter against Pirates

  • Lovullo reacts to Greinke's near no-hitter in win

    Lovullo reacts to Greinke’s near no-hitter in win

  • Diamondbacks snap losing streak with win over Tigers

    Diamondbacks snap losing streak with win over Tigers

  • Diamondbacks drop third straight with loss to Tigers

    Diamondbacks drop third straight with loss to Tigers

  • Shot Clock: D-Backs face pivotal homestand

    Shot Clock: D-Backs face pivotal homestand

  • Torey Lovullo after D-Backs' latest loss to Rockies

    Torey Lovullo after D-Backs’ latest loss to Rockies

  • Taijuan Walker after loss to Rockies

    Taijuan Walker after loss to Rockies

  • Patrick Corbin after being roughed up by Rockies

    Patrick Corbin after being roughed up by Rockies

  • D-Backs' Torey Lovullo on 'tough night' at Coors Field

    D-Backs’ Torey Lovullo on ‘tough night’ at Coors Field

  • Zack Greinke on impressive outing vs. Rockies

    Zack Greinke on impressive outing vs. Rockies

  • Manager Torey Lovullo after win over Rockies

    Manager Torey Lovullo after win over Rockies

MIAMI – After a month of struggles, left-hander Patrick Corbin made changes on Friday. He started his pregame routine a bit early with the hope it might help address his first-inning issues. He abandoned his change-up, a pitch opposing hitters had been hammering, and redoubled his efforts on his fastball and slider.

But Corbin was hit hard again on Friday night, allowing five runs in five-plus innings of a 7-5 loss. He gave up three homers, including two in a four-run first inning. The poor results that dogged him in May followed him into June.

Corbin had few answers for what happened. Unlike last week in Milwaukee, when he acknowledged the mistakes he made that led to a loss to the Brewers, he did not feel he threw all that poorly against the Marlins.

He hung a slider to Christian Yelich, a ball that was sent into the second deck in right field for a two-run homer in the first. But other than that, Corbin did not think the results aligned with the performance.

In six starts since the beginning of last month, he has logged 31 innings and allowed 31 runs. He threw well in April, posting a 2.29 ERA in six starts, but he can’t put his finger on what’s changed in the interim.

“I don’t know,” he said. “I feel pretty much the same, just kind of maybe missing some spots, falling behind. I don’t know. It’s something I’m trying to figure out. I want to go out there and be aggressive. And when I do, they’re just either jumping on it or – I don’t know.”

For their part, manager Torey Lovullo and catcher Chris Iannetta seemed to see things similarly. Lovullo focused on what happened after the four-run first, on how Corbin gave up just one earned run in the next four innings.

“I thought he threw the ball really well after that first inning,” Lovullo said.

Iannetta was even more bullish. He thought the home run Justin Bour hit in the first – another two-run shot that made it 4-0 – was an impressive display of strength, not an example of bad pitching. And he said the outing was “definitely a step in the right direction” despite the results.

“Something that you don’t see on TV or as a bystander is the life on his fastball or the life on his slider,” Iannetta said. “That was definitely back to where it was prior to this stretch. From a stuff perspective, he took a big step forward in the right direction.”

MORE: Gregor Blanco will be limited by injury 

Although the change-up has not been effective for Corbin this season – opponents were hitting .348 with a .913 slugging off it entering Friday, with much of the damage coming recently – he said he didn’t use the pitch because the Marlins had three lefties in the lineup along with right-handed hitters who hit that type of pitch well.

Still, for whatever reason, the Marlins didn’t have trouble hitting him. Of the 54 fastballs Corbin threw, he induced only one swing-and-miss. After giving up three hard-hit balls in the first – the two homers and a Giancarlo Stanton double that’s probably gone in most other parks – he allowed another six balls that came off the Marlins’ bats at 95 mph or harder.

Corbin’s struggles in the rotation date back not just to last season, when he was bumped to the bullpen for the season’s final six weeks, but even to late 2013. In 59 starts since he began to fade down the stretch that year, he has a 5.29 ERA. His career ERA in 101 starts is 4.40.

Lovullo was asked if the club will talk about whether to give Corbin another start.

“Really, at this point, it’s not an issue for any of us,” Lovullo said. “He’s been throwing the ball good enough, and we haven’t really even had that type of conversation. …

“For me, I think he deserves to go back out there. He deserves to continue to start and work his way through these types of moments.”

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Reach Piecoro at (602) 444-8680 or [email protected] Follow him on Twitter @nickpiecoro.

Saturday’s game

Diamondbacks at Marlins

When: 1:10 p.m.

Where: Marlins Park, Miami.

Pitchers: Diamondbacks RHP Randall Delgado (1-0, 3.47) vs. Marlins RHP Edinson Volquez (1-7, 4.44).

TV/Radio: FSAZ/KMVP-FM (98.7), KHOV-FM (105.1).

Delgado gave the Diamondbacks 5 2/3 innings on 92 pitches on Monday in Pittsburgh, an impressive outing given that it was just his second in the starting rotation. … Delgado walked none and struck out eight. … Marlins OF Marcell Ozuna is 3 for 5 with a double against Delgado in his career. 2B Dee Gordon is 4 for 7 with a double. … Volquez is coming off one of his better starts of the year. He gave up one run in six innings against the Phillies last week, picking up his first win of the season. … He received a two-year, $22 million deal from the Marlins in the offseason. … 1B Paul Goldschmidt is 7 for 14 (.500) with four doubles and a home run off Volquez.

Coming up

Sunday: At Miami, 10:10 a.m., Diamondbacks RHP Braden Shipley (0-1, 6.75) vs. Marlins RHP Vance Worley (0-2, 4.50).

Monday: Off.

Tuesday: At Chase Field, 6:40 p.m., Diamondbacks LHP Robbie Ray (5-3, 3.00) vs. Padres RHP Dinelson Lamet (2-0, 2.70).

Wednesday: At Chase Field, 6:40 p.m., Diamondbacks RHP Zack Greinke (7-3, 3.06) vs. Padres RHP Luis Perdomo (0-2, 5.01).