![FIBS CNA Umpire Webinar with Trevor Grieve is now available online](https://static.wbsc.org/assets/cms/20210114---Umpire-Locker-Room.jpg)
18/01/2021
1 Minute Read
FIBS CNA Umpire Webinar with Trevor Grieve is now available online
Trevor Grieve, supervising umpire and instructor for and , presented his 2-Man System Mechanics webinar during a on January 14, 2021