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ARLINGTON, Texas -- Trying to explain their untimely slump is about as difficult for the Texas Rangers as trying to score a run these days.

"You figure you'd have somebody in the lineup getting it done," manager Ron Washington said.

Trevor Cahill combined with two relievers on a one-hitter and the last-place Oakland Athletics completed a three-game series sweep, their first in more than three months, with a 4-0 victory Wednesday night.

The playoff-chasing Rangers are 1-5 on this homestand, and have scored only one run in their four-game losing streak.

"How can you explain something like that?" Ian Kinsler said. "It doesn't matter who you're playing. It's not productive at all. There's no way to put a finger on it. We just need to relax and get ready for the next game."

Next is Friday night against the Los Angeles Angels, who lost 9-8 at Boston on Wednesday night in the second of a three-game series and lead the AL West by six games over the Rangers. The Red Sox lead Texas, who have 17 games left, by 6 1/2 games in the wild-card race.

About three hours before the game, Texas hitting coach Rudy Jaramillo met behind closed doors for about 15 minutes with all of his batters.

The Rangers then went out and were one-hit for the third time this season. They were shut out for the 10th time -- three times in a four-game span for only the second time in club history -- and have only one run in 37 innings.

Texas is without injured All-Star hitters Michael Young (strained left hamstring) and Josh Hamilton (pinched nerve in back). They have been out for two weeks, except for Young's one at-bat Tuesday in an abbreviated comeback attempt.

But the Rangers scored 31 runs without them while sweeping a three-game series in a 24-hour span at Cleveland last week before coming home for this crucial homestand.

Cahill (9-12) had a career-best seven strikeouts and walked two in seven sharp innings, limiting Texas to Marlon Byrd's bloop single in the second. Michael Wuertz and Andrew Bailey each worked a perfect inning to close out Oakland's ninth shutout of the season.

"You don't know what they're going to do. I don't think about it. We've seen them a bunch," Cahill said. "I just wanted to attack them and be aggressive."

Or, as Kinsler said, "He threw strikes. That's all you needed to do against us tonight."

Cahill retired 16 consecutive batters after Nelson Cruz reached on a fielder's choice in the second inning. When the rookie right-hander walked Kinsler with two outs in the seventh, Oakland already led 4-0.

Rajai Davis put the A's ahead to stay when he was hit by a pitch in the first, stole his 38th base and scored on a double by Scott Hairston. Davis, who also scored the first Oakland run and matched a career best with four RBIs in Tuesday's 6-1 victory, added an RBI double in the sixth before scoring on Ryan Sweeney's sacrifice fly.

Landon Powell homered for Oakland, his drive to straightaway center chasing Dustin Nippert (5-3) with two outs in the sixth. Nippert gave up four runs and five hits.

Byrd's hit was only his second in 15 at-bats. Kinsler then walked before slugger Cruz's sacrifice attempt resulted in Cahill throwing to third for the out. Cahill then struck out Chris Davis and Taylor Teagarden to get out of the inning.

"I certainly didn't give him a bunt [sign]," Washington said. "Nobody out, runners on first and second, Nelson Cruz up there with 32 bombs."

Texas is 0-for-22 with runners in scoring position in its losing streak. The lone run came on David Murphy's solo homer Tuesday.

The Rangers have a day off before opening the desperation series at home against the Angels, whom they also play four times in Los Angeles the final week of the season.

Game notes

The only other time the Rangers were shut out three times in a four-game span was Sept. 18-22, 1992. ... The A's had played 27 series since their last sweep, June 5-7 at home against Baltimore. Their last road series sweep of at least three games had been at San Francisco from June 13-15, 2008. ... Light rain fell during the afternoon, but the game started on time. A light drizzle was falling when the game started -- and ended.