Bo Porter, Dave Trembley fired; Tom Lawless named new Astros manager

OAKLAND, CA - APRIL 15: Manager Bo Porter (L) of the Houston Astros signals the bullpen to make a pitching change taking Paul Clemens (C) out of the game against the Oakland Athletics in the six inning at O.co Coliseum on April 15, 2013 in Oakland, California. All uniformed team members are wearing jersey number 42 in honor of Jackie Robinson Day. (Photo by Thearon W. Henderson/Getty Images) less

OAKLAND, CA - APRIL 15: Manager Bo Porter (L) of the Houston Astros signals the bullpen to make a pitching change taking Paul Clemens (C) out of the game against the Oakland Athletics in the six inning at ... more

Photo: Thearon W. Henderson / Getty Images

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HOUSTON, TX - JULY 24: Bud Norris #20 of the Houston Astros gets a hug from manager Bo Porter after being taken out of the game in the seventh inning against the Oakland Athletics at Minute Maid Park on July 24, 2013 in Houston, Texas. (Photo by Bob Levey/Getty Images) less

HOUSTON, TX - JULY 24: Bud Norris #20 of the Houston Astros gets a hug from manager Bo Porter after being taken out of the game in the seventh inning against the Oakland Athletics at Minute Maid Park on July ... more

Photo: Bob Levey / Getty Images

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(l-r) Legendary Astros Broadcaster Milo Hamilton talks with the new manager of the Houston Astros Bo Porter. The Houston Astros honored Milo Hamilton Tuesday October 16, 2012, during the Blue Star Gala saluting Hall of Fame broadcaster Milo Hamilton at Minute Maid Park in Houston, Texas.
The gala was a gathering of many former Major League stars that wanted to honor the work of Hamilton. (Billy Smith II / Houston Chronicle) less

Portrait of Houston Astros new manager Bo Porter and his wife Stacey in Minute Maid Park Thursday, Nov. 8, 2012, in Houston.
Porter's wife, Stacey Erwin-Porter, is a graduate of Westbury High School, the couple has established the Bo Porter Self Foundation and Bo Porter also coached a select baseball team, the Texas Hawkeyes, in 2005 and 2006.
( Johnny Hanson / Houston Chronicle ) less

Portrait of Houston Astros new manager Bo Porter and his wife Stacey in Minute Maid Park Thursday, Nov. 8, 2012, in Houston.
Porter's wife, Stacey Erwin-Porter, is a graduate of Westbury High School, the ... more

Photo: Johnny Hanson / Houston Chronicle

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Houston Astros manager Bo Porter waves to the crowd from a convertible during the 19th Annual MLK Grande Parade by the MLK Parade Foundation, which started on San Jacinto and Rosalie Streets in Midtown, Monday, Jan. 21, 2013. ( Karen Warren / Houston Chronicle ) less

Houston Astros manager Bo Porter waves to the crowd from a convertible during the 19th Annual MLK Grande Parade by the MLK Parade Foundation, which started on San Jacinto and Rosalie Streets in Midtown, ... more

Photo: Karen Warren / Houston Chronicle

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Houston Astros manager Bo Porter (16) talks with GM Jeff Luhnow as they watch pitchers throw at the Oseola County Stadium, Tuesday, Feb. 12, 2013, in Kissimmee, as pitchers and catchers get their first official workout completed on the first day of spring training. ( Karen Warren / Houston Chronicle ) less

Houston Astros manager Bo Porter (16) talks with GM Jeff Luhnow as they watch pitchers throw at the Oseola County Stadium, Tuesday, Feb. 12, 2013, in Kissimmee, as pitchers and catchers get their first ... more

Photo: Karen Warren / Houston Chronicle

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Houston Astros manager Bo Porter (16) signs autographs for fans at the Oseola County Stadium, Tuesday, Feb. 12, 2013, in Kissimmee, as pitchers and catchers get their first official workout completed on the first day of spring training. ( Karen Warren / Houston Chronicle ) less

Houston Astros manager Bo Porter (16) signs autographs for fans at the Oseola County Stadium, Tuesday, Feb. 12, 2013, in Kissimmee, as pitchers and catchers get their first official workout completed on the ... more

Houston Astros manager Bo Porter (16) gives a pep talk at the end of day two of spring training workouts at the Osceola County Stadium, Wednesday, Feb. 13, 2013, in Kissimmee. ( Karen Warren / Houston Chronicle ) less

Houston Astros manager Bo Porter (16) gives a pep talk at the end of day two of spring training workouts at the Osceola County Stadium, Wednesday, Feb. 13, 2013, in Kissimmee. ( Karen Warren / Houston ... more

Comedian Domingo Ayala takes out the lineup card for Houston Astros manager Bo Porter before an 11-2 victory over the Toronto Blue Jays in a spring training exhibition game on Sunday, March 17, 2013, in Kissimmee, Fla. ( Smiley N. Pool / Houston Chronicle ) less

Comedian Domingo Ayala takes out the lineup card for Houston Astros manager Bo Porter before an 11-2 victory over the Toronto Blue Jays in a spring training exhibition game on Sunday, March 17, 2013, in ... more

Photo: Smiley N. Pool / Houston Chronicle

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Houston Astros manager Bo Porter watches from the dugout during an exhibition game against the Chicago Cubs at Minute Maid Park on Friday, March 29, 2013, in Houston. ( Smiley N. Pool / Houston Chronicle )

Houston Astros manager Bo Porter watches from the dugout during an exhibition game against the Chicago Cubs at Minute Maid Park on Friday, March 29, 2013, in Houston. ( Smiley N. Pool / Houston Chronicle )

Photo: Smiley N. Pool / Houston Chronicle

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Houston Astros manager Bo Porter (16) walks back to the dugout after he argued a call with umpire Andy Fletcher during the first inning of Opening Day at Minute Maid Park,Sunday, March 31, 2013, in Houston. ( Karen Warren / Houston Chronicle ) less

Houston Astros manager Bo Porter (16) walks back to the dugout after he argued a call with umpire Andy Fletcher during the first inning of Opening Day at Minute Maid Park,Sunday, March 31, 2013, in Houston. ( ... more

Reid Ryan the Astros' new President of Business Operations, chats with manager Bo Porter during batting practice before the start of an MLB game at Minute Maid Park, Tuesday, May 21, 2013, in Houston. ( Karen Warren / Houston Chronicle ) less

Reid Ryan the Astros' new President of Business Operations, chats with manager Bo Porter during batting practice before the start of an MLB game at Minute Maid Park, Tuesday, May 21, 2013, in Houston. ( Karen ... more

Photo: Karen Warren / Houston Chronicle

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Houston Astros manager Bo Porter looks out over the field after relief pitcher Jose Veras was injured trying to field a ground ball by Tampa Bay Rays first baseman James Loney during the tenth inning at Minute Maid Park on Thursday, July 4, 2013, in Houston. ( Smiley N. Pool / Houston Chronicle ) less

Houston Astros manager Bo Porter looks out over the field after relief pitcher Jose Veras was injured trying to field a ground ball by Tampa Bay Rays first baseman James Loney during the tenth inning at ... more

Photo: Smiley N. Pool / Houston Chronicle

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Houston Astros manager Bo Porter (16), right, talks to Houston Astros starting pitcher Jarred Cosart (48) after he was taken out of the game in the sixth inning as the Astros played the Boston Red Sox at Minute Maid Park Wednesday, Aug. 7, 2013, in Houston. ( Johnny Hanson / Houston Chronicle ) less

Houston Astros manager Bo Porter (16), right, talks to Houston Astros starting pitcher Jarred Cosart (48) after he was taken out of the game in the sixth inning as the Astros played the Boston Red Sox at ... more

Home Plate umpire Mark Carlson throws out Houston Astros manager Bo Porter (16) after he argued a call as the Astros lost to the Boston Red Sox 7-5 at Minute Maid Park Wednesday, Aug. 7, 2013, in Houston. ( ... more

Photo: Johnny Hanson / Houston Chronicle

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Astros manager Bo Porter embraces Wanda Shannon, who will throwing the first pitch at the Astros vs. Rangers game, at Minute Maid Park on May 12, 2014, in Houston Tx. Shannon has stage 4 cancer, and it has spread all over her body. She was a runner up for the MLB At Bat Against Cancer & Honorary Bat Girl Contest, but didn't win. Despite not winning the contest, the Houston Astros have extended an invitation for her to throw the opening pitch and enjoy field access. ( Mayra Beltran / Houston Chronicle ) less

Astros manager Bo Porter embraces Wanda Shannon, who will throwing the first pitch at the Astros vs. Rangers game, at Minute Maid Park on May 12, 2014, in Houston Tx. Shannon has stage 4 cancer, and it has ... more

Photo: Mayra Beltran / Houston Chronicle

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Houston Astros manager Bo Porter (16) during the National Anthem before the start of an MLB baseball game at Minute Maid Park, Saturday, May 17, 2014, in Houston. ( Karen Warren / Houston Chronicle )

Houston Astros manager Bo Porter (16) during the National Anthem before the start of an MLB baseball game at Minute Maid Park, Saturday, May 17, 2014, in Houston. ( Karen Warren / Houston Chronicle )

HOUSTON, TX - AUGUST 13: Bo Porter #16 of the Houston Astros talks with reporters before playing the Minnesota Twins at Minute Maid Park on August 13, 2014 in Houston, Texas. (Photo by Bob Levey/Getty Images)

HOUSTON, TX - AUGUST 13: Bo Porter #16 of the Houston Astros talks with reporters before playing the Minnesota Twins at Minute Maid Park on August 13, 2014 in Houston, Texas. (Photo by Bob Levey/Getty Images)

Photo: Bob Levey / Getty Images

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SEATTLE, WA - MAY 24: George Springer #4 of the Houston Astros is congratulated by manager Bo Porter #16 after hitting a two-run home run in the fifth inning against the Seattle Mariners at Safeco Field on May 24, 2014 in Seattle, Washington. (Photo by Otto Greule Jr/Getty Images) less

SEATTLE, WA - MAY 24: George Springer #4 of the Houston Astros is congratulated by manager Bo Porter #16 after hitting a two-run home run in the fifth inning against the Seattle Mariners at Safeco Field on ... more

Photo: Otto Greule Jr / Getty Images

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Frank Robinson, Hall of Famer, MLB Executive Vice President of Baseball Development, Jim Crane, Astros Owner an Chairman, Annise Parker, Mayor, City of Houston and Bo Porter, Houston Astros manager, announce that the Houston Astros will host the 2014 Civil Rights Game against the Baltimore Orioles May 30, 2014 during a press conference at Minute Maid Park, Tuesday, Nov.19, 2013 in Houston. (Bob Levey/For The Chronicle) less

Houston Astros manager Bo Porter is thrown out of the game by home plate umpire Hunter Wendelstedt, left, during the fifth inning against Oakland Athletics of a baseball game in Oakland, Calif., Sunday, Sept. 8, 2013. (AP Photo/Tony Avelar) less

Houston Astros manager Bo Porter is thrown out of the game by home plate umpire Hunter Wendelstedt, left, during the fifth inning against Oakland Athletics of a baseball game in Oakland, Calif., Sunday, Sept. ... more

Photo: Tony Avelar / Associated Press

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Houston Astros starting pitcher Erik Bedard, left, is taken out of the game by manager Bo Porter during the fifth inning of a baseball game against the Kansas City Royals at Kauffman Stadium in Kansas City, Mo., Saturday, June 8, 2013. Astros catcher Jason Castro is at right. (AP Photo/Orlin Wagner) less

Houston Astros starting pitcher Erik Bedard, left, is taken out of the game by manager Bo Porter during the fifth inning of a baseball game against the Kansas City Royals at Kauffman Stadium in Kansas City, ... more

Houston Astros manager Bo Porter, right, talks to home plate umpire Chris Conroy, left, about the condition of the pitchers mound during the third inning of a baseball game against the Toronto Blue Jays Friday, Aug. 1, 2014, in Houston. (AP Photo/David J. Phillip) less

Houston Astros manager Bo Porter, right, talks to home plate umpire Chris Conroy, left, about the condition of the pitchers mound during the third inning of a baseball game against the Toronto Blue Jays ... more

Photo: David J. Phillip / Associated Press

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Bud Norris was proud of the vintage Bo Jackson T-shirts he found before presenting one to manager Bo Porter, right

Bud Norris was proud of the vintage Bo Jackson T-shirts he found before presenting one to manager Bo Porter, right

Photo: handout

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Family photos of Bo Porter and his family, including his mother, for Astros feature for Mother's Day. Real captions to come from writer. Credit family for photos.

Family photos of Bo Porter and his family, including his mother, for Astros feature for Mother's Day. Real captions to come from writer. Credit family for photos.

In a clear showing of who is in charge of the club, the Astros on Monday fired managed Bo Porter as well as bench coach Dave Trembley, just days after reports arose of tensions between Porter and his general manager, Jeff Luhnow.

Tom Lawless has been named the team’s big league manager on an interim basis and Adam Everett has been added to the coaching staff to replace Trembley.

The Astros finished with a franchise-worst 51-111 record last season, Porter’s first as the manager after working with the Washington National as their bench coach. The Astros are 59-79 this season.

“Earlier today, I informed Bo Porter that he would no longer be our manager and told Dave Trembley that he would not complete the season as our bench coach.

“Bo’s passion and energy are unparalleled, and his desire to win unquestioned. This decision was not made because of our current level of competitiveness in the Major Leagues. I recognize that our win-loss record is largely a product of an organizational strategy for which I am responsible. Rather, I made this decision because I believe we need a new direction in our clubhouse.

“What we will seek going forward is a consistent and united message throughout the entire organization. It is essential that as an organization we create an atmosphere at the Major League level where our young players can come up and continue to develop and succeed. Ultimately, I am responsible for creating that culture, and I will do everything in my power to do so—even when it means making difficult moves like the one we made today.

“Moving forward, I am optimistic about the direction of our team. Our young core continues to progress, and I believe wholeheartedly that our plan—while at times challenging—is working and will bring a consistent winner to Houston in the very near future.”

Said Astros Owner Jim Crane in a statement: “This was not an easy decision to make. We wish Bo nothing but the best in the future. Jeff has my full support moving forward. Our goal to bring a championship to Houston remains.”

“We wish Bo and his family well, and feel he will be successful in future endeavors.”

Lawless, who has nearly 35 years experience in baseball as a player or a minor league manager and coach, was an interim manager at Class AAA Oklahoma City earlier this season. Everett spent parts of 11 seasons in the Majors as a shortstop and rejoined the Astros organization as a minor league infield instructor in 2013.

The Astros will begin their search immediately for their next full-time manager, who will be the Astros’ fourth since 2007.