BAL@HOU: McLouth crosses plate on a throwing error

HOUSTON -- Largely lost in the Orioles' 4-1 win over the Astros on Tuesday night was the continued presence of left fielder Nate McLouth on the basepaths.

McLouth manufactured an add-on run in the eighth inning, connecting for a leadoff single off Astros reliever Wesley Wright and stealing second base with Manny Machado at the plate. After Machado struck out, McLouth stole third and dashed home as catcher Jason Castro's throw skipped into left field, extending his team lead to 21 steals.

"He can really accelerate into the bag on a slide," manager Buck Showalter said of McLouth. "A lot of guys slide and they lose about a half a step slowing down or tucking the legs. He almost accelerates. I was telling Adam [Jones] about that in the dugout the other day, by the time he stole second [Tuesday night], Adam said, 'Like that?' The last 10 feet last night he looked like he was going to be out, but he finishes real well at the bag. It's a nice element to have."

McLouth entered Wednesday tied for the American League lead with Jacoby Ellsbury and is 33-for-35 since joining the Orioles during the 2012 season.

Trembley appreciates relationship with O's players

BAL@HOU: Jones makes his second great grab in eighth

HOUSTON -- There are still seven players remaining on the Orioles' roster who were managed by Astros third-base coach Dave Trembley, who was the skipper in Baltimore from June 18, 2007, until June 4, 2010. He joined the Astros prior to this season.

The players Trembley managed are Adam Jones, Nick Markakis, Matt Wieters, Jim Johnson, Troy Patton, Chris Tillman and Brian Matusz. Trembley was the first big league manager for Tillman, Matusz and Jones, and he had Markakis in the instructional league.

"They've all become Gold Glove, All-Star players," Trembley said. "They had a tremendous amount of ability and they learned to play Major League Baseball at the Major League level. All of them spent limited time in the Minor Leagues, much like the young man they have over there in [Manny] Machado. It was because of their makeup that they could handle it."

Trembley keeps in touch with as many of the players as he can and takes pride in their careers.

"I'm very proud and appreciative of the relationship I've had with those guys," he said. "I think if you ask all those guys, they would be very honest and say we were patient with them and very supportive."

Worth noting

• Eight players and associated staff visited the NASA facility prior to Wednesday's game and got a special tour.

• Triple-A Norfolk outfielder Lew Ford will undergo groin surgery on Thursday in Philadelphia with Dr. William Meyers. The procedure, which will remove some scar tissue from this winter's sports hernia, doesn't necessarily rule him out to return this season, but it's unlikely he'll return.

• Wilson Betemit (right knee injury) started hitting in the cage for the first time on Tuesday, but Showalter said it will be a long rehab as the team eases him back in and wants to make sure he builds up the proper strength in that area. There is no timetable for his return.

• Wei-Yin Chen (left oblique strain) did another 25 throws from 60-75 feet in extended spring training on Wednesday, repeating Tuesday's work, and continues to report no pain.

• The Casey Cares Foundation's fourth annual Casey Cares 5K will take place on Saturday, Aug. 3, at 8 a.m. ET at Camden Yards in partnership with OriolesREACH. Outfielder Nick Markakis and his wife Christina will serve as race ambassadors for the event with proceeds benefitting the Casey Cares Foundation, which provides uplifting and ongoing programs with a special touch to critically ill children and their families. Registration for the race is open now through Aug. 3, and both teams and individuals are encouraged to register. Entry fees are $30 per person through June 7; $35 per person June 8 - Aug. 2; and $40 on race day. To register, visit http://www.caseycares5k.org.

• The Orioles have announced a series of Vote Orange rallies aimed to further boost the efforts of the Vote Orange Campaign launched in April. The Vote Orange Street Team will be accompanied by The Oriole Bird and will give away game tickets, Vote Orange gear, and other promotional items to reward fans who #VoteOrange. The current list of rally dates and locations can be found on www.orioles.com/voteorange.