ARLINGTON, Texas -- Tough luck and inconsistent pitching have combined to put Scott Feldman in an 0-6 hole.

His most recent start was a loss at the hands of the Arizona Diamondbacks, who came away with an 11-3 win in their series finale against the Texas Rangers. Feldman gave up six runs, four earned, in just five innings of work in the loss.

The right-hander got off to a good start, striking out the side in the first, but he used 20 pitches to do so. Opponents are just 2-for-22 off Feldman in the opening frame, but unfortunately for him, baseball is more than a one inning game.

In the second, Feldman's night took a turn for the worse when he allowed a two-out single to Lyle Overbay on an 0-2 count. The next batter, Jason Kubel, crushed a two-run homer to give the Diamondbacks a 2-1 advantage.

He allowed two more runs in the third with two outs. Justin Upton beat out an infield single before an error by Mitch Moreland kept the inning alive. Overbay, then, delivered a two-run double to extend the Arizona lead.

"Maybe we made some mistakes behind him," manager Ron Washington said of Feldman's outing. "But just because we made mistakes, that doesn't mean you let the flood gates open. You've got to stop it. They make mistakes, you pick them up. They pick you up."

The Rangers have struggled on defense with Feldman on the mound, totaling eight errors in his starts, but he knows he has to battle through that.

"That kind of stuff happens, and I just have to get the next guy out," Feldman said. "I didn't do that tonight."

Standing at 0-6, Feldman holds the longest season-opening losing streak since C.J. Wilson lost his first six decisions in 2005. It is also the longest losing streak by a starter since John Dettmer in 1994.

Feldman has yet to get deeper than 5 1/3 innings this season, which he did against San Francisco on June 9, and a lot of that has to do with his pitch count. The 29-year-old has struggled to get guys out in a timely fashion, throwing 100 pitches, including 68 strikes, in his five innings on the mound.

"I got ahead of a couple of guys tonight, I just wasn't able to put them away," Feldman, who's ERA has risen to 6.50, said. "It was basically just lack of fastball command on all of those."

It's been no secret that Feldman has been the weak link in an already beaten up starting rotation, and he admitted it's frustrating.

"The last couple of games, I thought I threw the ball pretty well," he said. "Obviously tonight, I didn't make some pitches with two outs or two strikes. I feel like I'm very close to being good. ... I didn't think it would take me this long to start clicking and stuff, but I just feel like I'm so close to getting there."