Colorado ASA Umpires

Testing Sites and Times


April 8 6:30 – 8:30 at Florida Pitt Waller K-12 School
21601 E 51st Pl
Denver, CO 80249
April 15 6:30 – 8:30 at Shea Library Room A in Highlands Ranch
April 23 6:30 – 8:30 at Smokey Hill Library by Smokey Hill High School
April 28 6:30 – 8:30 at May Library at Parker Road and Florida


Slow Pitch Mechanics Clinic:

April 6, 10:00 AM – 2:00 PM. Lakewood Park
ASA Mobile App
The ASA umpire program is among the nation’s largest officiating organizations with over 35,000 officials actively involved each year. ASA officials are nationally recognized as the best trained and proficient in the sport and are involved in competition starting with league play, city, state and national championships. Ultimately, ASA umpires could officiate events such as world championship, Pan American and Olympic competitions.



The ASA annually hosts local, state and national umpire clinics which literally blanket the nation and bring the best instruction available in the sport to every region. Over the last decade, the Amateur Softball Association’s umpire program has become an innovator in the production of quality training materials. When a clinic is not available – videos, books, slides and other instructional aids allow instruction to continue. Visit as a one stop shop for all your ASA Umpire Apparel and Equipment needs. Click here to view the 2013 Umpire Catalog.

Colorado ASA Umpires

Matt Johnson
Colorado State ASA
Umpire in Chief


Ron Roach
Deputy U.I.C. North
(303) 743-9796


Cal Martin
Deputy U.I.C. South
(719) 250-2813


Lynn Sunahara
Deputy Slow Pitch UIC


Donna Sunahara 
Deputy Slow Pitch UIC


Bridget Collins
Asst Deputy Slow Pitch UIC 


Pam Vallejos
Staff U.I.C.


Rick Miltenberger 
Asst Deputy Slow Pitch UIC 


Mike Wiley
Umpire Secretary & Treasurer