PHOENIX -- As he exited the field with six runs having scored and still no one out in the third inning, left-hander Jordan Montgomery heard boos from D-backs fans, who were frustrated with his outing.

Their frustration, though, can¡¯t come close to what Montgomery has been feeling -- not just on the days when things haven¡¯t gone well on the field -- but also the days in between.

¡°You just feel like a piece of crap every day you show up,¡± Montgomery said. ¡°Baseball's definitely got me in the furnace right now.¡±

VOTE NOW! Help make D-backs All-Star Game starters

It was a day of frustration for Montgomery¡¯s teammates, as well, as they struggled to come up with the big hit in a 9-3 loss to the Giants at Chase Field on Wednesday afternoon that snapped their four-game winning streak.

The four-game streak had matched the D-backs' longest on the season, which has been marked by stops and starts as they try to find their way back to the form they displayed last year.

It¡¯s much the same for Montgomery, who was a Trade Deadline acquisition for the Rangers last year and helped pitch Texas to a World Series victory over the D-backs.

¡°Four-game winning streak and I feel like every time I go out there, we lose,¡± Montgomery said. ¡°Just trying to be better.¡±

Montgomery was a free agent following the World Series and he remained unsigned until the D-backs inked him the day after the season started to a one-year deal with a vesting player option for 2025.

After spending almost three weeks in the Minor Leagues, the 31-year-old dazzled in his first start for the D-backs against the Giants, when he allowed just one run over six innings. In fact, three of his first six starts qualified as quality starts even though he didn¡¯t feel they were as good as they could have been.

In a May 25 start against the Marlins, Montgomery allowed two runs over six innings and thought he had finally turned the corner.

Instead, it seems like he hit a brick wall, because he then allowed eight runs against the Mets on May 31 and another six against the Giants.

¡°Another stinker,¡± Montgomery said. ¡°There's way more negatives than positives right now. So it's hard to see any positives right now.¡±

Montgomery wiggled out of a first-and-second jam in the first, which D-backs manager Torey Lovullo thought was a good sign.

But as the Giants put one good at-bat after another against him in the third and the inning started spiraling, Lovullo felt he had to make a change.

¡°I know that he's gonna figure this out, and we're gonna continue to coach him up and push him in the right direction,¡± Lovullo said. ¡°That's all we know how to do here. I could see that he was really frustrated and nothing seemed to be going the way he wanted it to. And getting into that mindset, it¡¯s tough to execute and to keep going.¡±

It wasn¡¯t all on Montgomery, though, as D-backs pitchers combined to walk 10 batters and allow 14 hits. The offense, meanwhile, went just 2-for-14 with runners in scoring position.

¡°We got to do better,¡± Lovullo said. ¡°That was a long day. I know this game can be hard, but the name of the game is execution and we¡¯ve got to be able to throw far fewer pitches than that.¡±