Astros fire manager Bo Porter

The Astros have fired manager Bo Porter, as first reported by Evan Drellich of the Houston Chronicle. The team also relieved bench coach Dave Trembley of his duties and named minor league instructor Tom Lawless as interim manager.

Porter, 42, was fired after less than two seasons on the job with Houston in which his team posted a combined 110-190 record (.367 winning percentage), though his win-loss record is probably not the main reason that he was let go. FOXSports.com's Ken Rosenthal reported last week that Porter was at odds with general manager Jeff Luhnow due to a variety of factors, leading many to believe that one of the two would be let go in the near future. With Luhnow in the middle of a long-term plan to rebuild the Astros' franchise, he was unlikely to be fired, leaving Porter as the odd man out.

The Astros will begin their search for a new manager immediately, getting a jump on other teams who may look to hire a new manager during the offseason. It is unclear who they have in mind for candidates, but candidates from 2012 like Tim Bogar and Dave Martinez could be in the running.

Lawless, 57, played in the majors with the Reds, Expos, Cardinals and Blue Jays from 1982 to 1990, and has been managing in the Astros' system since 2007. This will be the first time he will be at the helm of a major league club, so it will be interesting to see if the Astros consider him to be a candidate for the long-term job.