Gilbreth is the first graduate of Abilene Christian Schools to be selected to the Hall of Fame. He was an All-Southland Conference pitcher at Abilene Christian University, compiling a four-year record of 25-9 from 1966-69. The left-hander was the NCAA strikeout leader with 134 strikeouts in 89 innings. After graduating from ACU, Gilbreth went on to pitch for the Detroit Tigers and California Angels. He was named ACU’s baseball coach in 1991 when the university resumed intercollegiate baseball after an 11-year absence. He spent four years coaching the Wildcats.