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HOUSTON -- The Houston Astros have added four new coaches to their staff.
Brent Strom was named pitching coach, Pat Listach first base coach, Craig Bjornson bullpen coach and Ralph Dickenson assistant hitting coach.
Also on Tuesday, the team announced that third base coach Dave Trembley and former bench coach Eduardo Perez would switch positions for the upcoming season. Dan Radison, who spent last season as the team's assistant hitting coach, has been named special assignment coach.