DETROIT - The Rangers fired up the Round Rock shuttle again on Friday, bringing in right-hander Anthony Ranaudo and shipping right-hander Phil Klein back to their Triple-A affiliate.

Ranaudo is the fifth pitcher to be called up from Round Rock since opening day. Circumstances dictated the move.

The Rangers needed a long reliever. Left-hander Cesar Ramos, normally the long reliever, worked 4 1/3 innings on Thursday during a loss at Toronto and likely will be unavailable until Sunday.

When Ramos is ready to pitch again, Ranaudo will move into the role previously occupied by Klein, who faltered in the last week. Klein was scored on in each of his last three appearances, allowing two homers and five runs.

"Ranaudo does give us length," manager Jeff Banister said. "More than anything else, Ranaudo slides into that role Klein was in."

Ranaudo was 1-1 with a 2.02 ERA for 13 1/3 innings in three starts with Round Rock. The Rangers overhauled his delivery during spring training, and Ranaudo said the changes started working for him.

"It was hard finding what was and wasn't going to work with everything thrown at me so quickly," Ranaudo said. "But I think I found it, and I'm in a really good place physically and mentally now."

Ranaudo returned on Sunday from a two-week stay on the disabled list because of a strained groin.

Banister acknowledged that the reports on Double-A Frisco right-hander Matt Bush are encouraging, but the timing was not good for him. The Rangers want him to continue his return to the game after a four-year absence that included time in a Florida prison for a DUI offense.