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6/11/2013 10:33 P.M. ET

Maxwell's rehab struggles won't impact starting job

SEATTLE -- Justin Maxwell's rehab assignment numbers with Double-A Corpus Christi may not reflect those of the Astros' 2012 home run leader, but manager Bo Porter is more concerned with health as the center fielder recovers from a broken left hand suffered on April 24.

Maxwell is 0-for-17 with eight strikeouts and a walk in five games. He had eight extra-base hits and a .234 average in 20 games before landing on the disabled list.

"When you start talking injury-wise, you just want to make sure that physically, the guy is able to perform and he's not having any setbacks from a health standpoint," Porter said. "I'm not worried about any other aspects."

Maxwell's absence has meant more playing time for the struggling Jimmy Paredes, who is 5-for-40 with 16 strikeouts in his past 14 games. Paredes was called up on May 6 from Triple-A Oklahoma City to bolster Houston's outfield depth.

Porter said Maxwell's starting spot will be waiting for him upon his return to the Astros.

Reliable Cisnero keeps eating innings for Astros

SEATTLE -- Jose Cisnero has been on fire of late for Houston, allowing only one run in his past 16 innings with a win, striking out 18 batters over the six outings.

"I haven't changed anything," Cisnero said. "Mentally being tighter, I go through my same preparation, throw the breaking ball and slider down, and work the corner."

He's been an innings-eater for Houston, going two-plus frames in 10 of his last 11 outings.

"He's done a great job in long relief. He is a starter that we put down in the bullpen because we want to have long relievers," manager Bo Porter said. "He's done a good job in that role, every time we put him in a game, it's been for extended innings and we'll continue to build him up that way. If we needed a spot starter, somebody was to go down, he's in position. He's ready to jump into the rotation."

Six Double-A prospects named to All-Star game

SEATTLE -- Houston will be well represented in the Texas League All-Star game, with six players on Double-A Corpus Christi selected to participate. Catcher Rene Garcia and outfielder George Springer will start for the South Division, with outfielder Domingo Santana in reserve. Pitchers Jake Buchanan, David Martinez, and Mike Foltynewicz are also on the team. The Hooks are in first place in their division at 38-25.

Springer is the Astros' third-ranked prospect, according to MLB.com., and Foltynewicz is also ranked among the top 10.

"We have some really good players there," Astros manager Bo Porter said. "Those are definitely prospect guys that at some point or another will be here to help this ballclub. We're excited about all of our young players."

The game is scheduled for June 25 at Arvest Ballpark in Springdale, Ark.

Jacob Thorpe is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.