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Important Information

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Welcome Metro Detroit ASA/USA

Welcome to Metro Detroit ASA/USA. The Metro Detroit Amateur Softball Association (MDASA) is an affiliation of the National Amateur Softball Association and one of 70 metro/state associations in the United States. The MDASA coverage area includes the counties of Oakland, Wayne, Macomb, and Livingston. Learn More

ASA USA Umpire Updates


Metro Detroit ASA/USA hosts a successful National Umpire School and honors umpires at annual awards breakfast - medals, National Indicator Fraternity, Years of Service and local league umpire recognition.
Click Here for 2016 Umpire Registration Information.

ASA USA Equipment Standards

Click Here for a complete list of the ASA/USA Approved Equipment Standards.

 The Amateur Softball Association of America (ASA)/USA Softball, the National Governing Body of Softball in the United States, in working with Easton Baseball/Softball Inc. (Easton), announced today that Easton is voluntarily removing the following softball bat models from the ASA/USA list of certified bats: SCN1, SCN11BH, SCN1B, SCN2B, SCN3, SCN4B, SCN5, SCN5B, SCN6B, SCN7, SCN7B, SCN8, SCN8B, SCN9, SCX14, SCX14B, SCX24B, AND SCX3.

Tournament ASA

We're making it easier for ASA teams in your area to find tournaments.  Launched in 2010, TournamentASA.com is an exclusive, tournament management system designed to promote your ASA tournament, register teams and manage your online bracket from the first pitch to the last out.  Coaches and managers can't get enough of the special features that are included on the site!  Tools such as Power Rankings, opponent overview and tournament history, all based off teams past games, give coaches a better understanding of the competition they are scheduled to face. 

Learn More


Metro Detroit ASA/USA

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National ASA/USA
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News & Updates

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ASA Mobile Site App

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USA Softball Legacy Club

Interested in testing bats for league play?  Click Here.