Yeast served as the conference umpire coordinator for the
Missouri Valley Conference from 1990 to 1994, the
Metro Conference from 1993 to 1995, and
Conference USA from 1996 to 1999. He umpired 25 Division I conference tournaments and 14 NCAA Regionals. He was an umpire during the NCAA
College World Series in 1991 and 1995, In 2021, Yeast was the first ever umpire inducted into the
College Baseball Hall of Fame. Internationally, Yeast worked as an umpire for the
1996 Olympic Games, the 1993 and 1999 Intercontinental Cups, and the 1990 World Championships. In 1995 he also worked as an umpire for
Major League Baseball. From 1996 to 2008 Yeast served as the National Coordinator of Baseball Umpires for the NCAA. He resigned from the NCAA position in order to return to umpiring on the field, where Yeast continued until 2015. Since 2015, he has served as Coordinator of Baseball Officiating for the
Pac-12 and the Big West and Western Athletic Conferences. In 2024, Yeast became the Assistant Coordinator of Umpires for the
SEC Umpire Consortium that includes the
SEC,
Sun Belt,
Southland,
Southern and
Ohio Valley and
Atlantic Sun Conferences. He worked as an Instant Replay Communicator for the
NFL from 2008 thru 2015, and as an Instant Replay Official for the Pac-12 Conference from 2017-present. He was selected to work the 2018
Tax Slayer Gator Bowl. In 2022, Yeast was named Supervisor of Football Instant Replay Officials for the
Pac-12 Conference. Yeast was selected to work as the Colloborative Replay Official for the 2021
CFP Semi-Final (Michigan vs Alabama) and National Championship Game (Georgia vs Alabama) and the CFP Semi-Final Game (Michigan vs TCU) in 2022. In 2025, Yeast was hired by the
NFL to serve as their Instant Replay Trainer. He served as the vice president of officiating education for
ArbiterSportsfrom 2009 until 2020. ==References==