Baseball-Astros fire manager Porter, bench coach Trembley

Sept 1 (Reuters) - The struggling Houston Astros fired manager Bo Porter and bench coach Dave Trembley on Monday, bringing in Tom Lawless as the interim manager for the rest of the 2014 season. Houston has gone 59-79 this season and lies fourth in the American League West standings with only state rivals, the Texas Rangers, below them. "This was not an easy decision to make," Astros owner Jim Crane said in a statement. "We wish Bo nothing but the best in the future. Our goal to bring a championship to Houston remains." (Reporting by Mark Lamport-Stokes in Los Angeles; Editing by Gene Cherry)