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6/9/2013 2:35 P.M. ET

LeBlanc eager to help out Astros' bullpen

Left-hander joins team in Kansas City after being claimed off waivers

KANSAS CITY -- Left-hander Wade LeBlanc joined the Astros on Sunday and said that he's looking forward to having an opportunity to help the Houston bullpen.

The Astros on Saturday claimed LeBlanc off waivers from the Miami Marlins. Manager Bo Porter said LeBlanc could be used both in short and long relief.

"They gave me an opportunity and hopefully I can make them look good on it," LeBlanc said. "I'm going to enjoy the ride and try to do the best I can."

LeBlanc replaces Brad Peacock on the 25-man roster. Peacock was sent to Triple-A Oklahoma City on Saturday night -- following the Astros' 7-2 loss to the Royals -- to work as a starter.

"[LeBlanc] will add quality depth to our bullpen," Porter said. "He's a true left-handed long guy who has the ability to start."

Dominguez reunites with Royals' Moustakas

KANSAS CITY -- The respective third basemen for the Astros and Royals in Sunday's series finale go back a long way. Houston's Matt Dominguez and Kansas City's Mike Moustakas began playing baseball together when they were 7 years old growing up in the Los Angeles area.

"I've been friends with him pretty much my whole life," Dominguez said.

At Chatsworth High School, Dominguez played third base and Moustakas was the shortstop. Moustakas was the No. 2 overall pick in the 2007 First-Year Player Draft and Dominguez went No. 12.

Dominguez and Moustakas were just the sixth set of teammates to be selected in the first round of the same Draft.

"For us to go in the first round together, make it to the Major Leagues and now play against each other, is quite an honor," Dominguez said. "It has been a dream-come-true for both of us."

Moustakas has endured a season-long struggle at the plate. He entered Sunday's game hitting just .180 with four homers and 12 RBIs. Dominguez started the day at .241 with nine homers and 32 RBIs.

Dominguez and Moustakas had dinner together following Friday's series opener.

"We talked a little about the game, but mostly about high school and the memories growing up," Dominguez said. "It's always good to see an old friend and be able to catch up."

Porter addresses Astros' approach at plate

KANSAS CITY -- Astros manager Bo Porter was not happy with his team's late-game hitting approach on Saturday in a 7-2 loss to the Royals.

The Astros trailed by five when they came to bat in the eighth and were retired on just four pitches by reliever J.C. Gutierrez. Marwin Gonzalez and Jimmy Paredes grounded out and Jose Altuve flied to right.

"Losing a game is one thing, but playing the game the right way is another thing," Porter said. "As long as I'm here, we're going to play the game the right way. That was not playing baseball the way it is supposed to be played.

"Not understanding situations, that's just unacceptable. It was addressed, it's over and I think it will be a good learning experience for those guys. You have to put yourself in position to have a chance to mount a comeback. You can't hit a grand slam with nobody on base."

Barnes out of Sunday's lineup with hamstring

KANSAS CITY -- Center fielder Brandon Barnes was not in the lineup on Sunday because of tightness in his left hamstring.

Barnes tweaked the hamstring in the first inning of Saturday's 7-2 loss to the Royals while fielding David Lough's leadoff single. He exited the game prior to the bottom of the sixth.

"It's a little bit tight and I told Nate [trainer Lucero], there's no sense in pushing the envelope," Astros manager Bo Porter said. "Center field is a demanding position. You can get into some long runs and quick motion. I'd rather give it a day or so rather than having him look at 15 days on the disabled list and rehabbing."

Porter speaks at Negro Leagues Museum

KANSAS CITY -- For Astros manager Bo Porter, a highlight of his weekend stay in Kansas City was having the opportunity to speak at the Negro Leagues Baseball Museum's Legends Luncheon on Friday.

Porter, one of three African American managers in Major League Baseball, was happy for the opportunity to address the gathering at the Bruce Watkins Cultural Center.

"It's always an honor when you start talking about the Negro Leagues and people like Jackie Robinson, Satchel Paige ... the guys who laid the foundation for the opportunities that myself and other minorities have today in the game of baseball," Porter said. Porter has toured the Negro Leagues Baseball Museum previously while in Kansas City and considers it a must-see attraction because of its historical significance.

"I would encourage other people, who may not know much about the history, to come to Kansas City and make it a point to go," Porter said.

Robert Falkoff is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.