The Astros will add another young starter to their rotation Tuesday night when they call up Paul Clemens for the start in Chicago.
The right-hander will round out the starting six, each of whom are 25 years old or younger. Clemens (25) joins Brad Peacock (25), Dallas Keuchel (25), Brett Oberholtzer (24), Jarred Cosart (23) and Jordan Lyles (22), who's the youngest and most experienced of the bunch.
"We have six guys in the rotation that we believe will be able to help our ballclub one way or another, whether it's staying in the rotation or a move to the bullpen," Astros manager Bo Porter said. "We're excited about the six guys we have in the rotation moving forward."
Tuesday night will mark Clemens' first Major League start, but he appeared in 30 games in relief for Houston earlier this season. During those appearances, he posted a 6.36 ERA. He has made six starts at Triple-A Oklahoma City, where he went 3-2 with a 4.50 ERA.
"He's been doing well. We sent him to Oklahoma City with the notion of putting him in the rotation and allowing him to be built up," Porter said. "He pitched out of the bullpen early in the year and this remainder of the season we want to see how he looks like as a starter, so that we can better evaluate the role he will be able to play on next year's team."
Clemens, acquired two years ago from the Braves as part of the deal that sent Michael Bourn to Atlanta, is taking the rotation spot formerly occupied by veteran Erik Bedard, who was moved to the bullpen for the rest of the season.
Meanwhile, White Sox youngster Jose Quintana will get the nod for the second game of the series. The 24-year-old lefty is coming off a no-decision against the Royals on Aug. 22. He allowed three runs on four hits and a walk, and struck out seven in the outing as Chicago went on to win 4-3.
Quintana has only faced the Astros once -- in a June 17 start. He went 4 2/3 innings, giving up two runs on five hits, three walks and five strikeouts in a no-decision.
Astros: Porter fine with short bench
With a six-man rotation, Houston currently has 13 pitchers on its roster, leaving only three bench players. But with Sept. 1 less than a week away, Porter doesn't mind the shortage of position players.
"We just felt more comfortable having the extra pitcher right now," he said. "Most of our guys that are playing are pretty much going to play every day. There aren't too many guys that we are going to hit for. With Sept. 1 right around the corner, we just figure we'll go with that construction. When Sept. 1 rolls around, we'll get some more guys added to the roster."
Houston is expected to add a few players Sunday when rosters expand, but both Triple-A Oklahoma City and Double-A Corpus Christi have playoffs in their sights -- Corpus Christi has already clinched a playoff spot, while Oklahoma City is closing in on one. As a result, the Astros may not be making a lot of callups come September.
White Sox: Offensive improvements spur success
Despite owning the second worst record in the American League -- sitting just ahead of the Astros -- the White Sox have benefitted from some timely home runs and a revived offense of late.
After Monday's loss -- which included homers from Jeff Keppinger and Adam Dunn -- the White Sox moved to 8-2 in their last 10 games.
"You like it," White Sox manager Robin Ventura said of the timely home runs. "I don't think there's any team that doesn't like it. We haven't hit that many. Early in the year it didn't seem like we were getting them at the right time. … You get them at the right time and it's good for you and gives you the kind of distance at that time to push ahead and give your bullpen a chance. That stuff all looks good and we're not at any point discouraging them from that. It's good to see they can do that."
• White Sox closer Addison Reed is five saves short of a 40-save season. His 35 saves mark a career high. He gave up back-to-back homers in the ninth inning on Monday night in Chicago's 10-8 loss to Houston.
• Astros rookie reliever Kevin Chapman has 10 straight appearances without allowing an earned run to start his Major League career.
Kelly Erickson is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.