Horner led the 2009 Mavericks to an 83–57 (.593) record, winning the first- and second-half California League South Division titles.Mariners affiliate wins first-half titleHigh Desert locks up second-half title He was named the league's Manager of the Year.M's minor-leaguers made splash this year On July 30, 2010, he resigned as High Desert's manager to become assistant baseball coach of Texas Tech University, serving through the 2012 campaign. He then returned to the Mavericks in 2013; he is the winningest manager in the franchise's 23-year history.Victorville Daily Press
