First-year Rangers hitting coach Thad Bosley is out, according to ESPN Dallas.
He'll be replaced by Scott Coolbaugh, who has been working with hitters at the Rangers' Triple-A affiliate in Round Rock. Coolbaugh is in his fifth season as a hitting instructor in the Texas organization, his third at the Triple-A level. He served in the same role at Double-A Frisco in 2007-08 before joining Triple-A Oklahoma City the following year.
Coolbaugh previously spent five seasons in the Arizona Diamondbacks organization as a minor league manager and hitting coach.
Coolbaugh played first base for the University of Texas before heading to the majors for four years after being selected in the third round of the amateur draft by the Texas Rangers. After two years in Arlington, he went on to play for the San Diego Padres and St. Louis Cardinals.
He is the brother of the late Mike Coolbaugh who died in 2007 after being struck in the head by a line drive while coaching first base for the Tulsa Drillers.
Bosley was hired to replace Clint Hurdle, who spent a year in Texas after being hired to replace Rudy Jaramillo. Rudy was with the team for 15 years.