https://play.afl/umpire/umpire-development-pathway
Umpire Development Pathway - Play AFL
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https://obua.org/
Umpire Development | Oahu Baseball Umpires Association (OBUA)
Nov 8, 2025 - At Oahu Baseball Umpires Association (OBUA), we provide Hawaii baseball umpires with training, certification, and professional development programs.
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