$50 OFF the 2021 Northern, Central or Odd Age World Series - Pay in Full by April 15th, 2022. Use the Code: EARLYWS50 at Checkout.
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    Michigan NSA Slowpitch

    Michigan NSA Slowpitch

    Michigan Grand Slam Tournaments: The Grand Slam Tournament Series, is a series of Tournaments your team can play in. Each Tournament is a WORLD SERIES and SUPER REGIONAL QUALIFIER. The Grand Slam Series is offered for  Men's, Women's and Coed divisions.

    Men's Grand Slam Tournament Series Information - 2021

    Men's Membership Information - 2021

    Women's Membership Information

    Women's Tournament Flyer

    Entry Deadlines for Grand Slams:  5:00 PM on WEDNESDAY prior to the tournament date. Discounts offered to teams that pay in advance by FRIDAY, one week prior to the tournament date.


    Pay Online

    • Michigan Adult Teams can PAY for selected tournaments ONLINE.
    • Teams can pay for their NSA registration fee ONLINE.
    • Teams can enter tournaments online and Mail payments, but must meet all deadlines. 
    • Certain tournaments will still require an official NSA Post Season Entry Form and are marked as such.
    • Teams may need to Contact Ray Couturier for payment information: 231-218-4801


    Tournament Listings

    All Tournament Listings are posted at PlayNSA.com. Select Tournament & League Search then use prompts: Adult, Current Season, Michigan, etc.

    Search Now


    Park Contacts & Addresses

    Can be found in the PlayNSA.com Tournament DETAILS for each tournament. Park Policy: Every NSA Complex has their own Park rules and these rules will have to be abided by or offenders of the rules will be eliminated from the tournament and could also receive a one (1) year suspension from NSA play.

    TAGS Sports Complex

    TAGS Sports Complex

    League Information and Registration Form 

    Pay for the Spring, Summer & Fall Leagues in Full by April 11th and receive a FREE Team Bat!



    Pay by Mail: Mailed Payment must be received in the office 1 full week before the  Entry Deadline.

    Pay Online: This is the only service offered for teams wishing to pay by card and it must be done online.


    Pay in Person: You can drop off a check or cash to Diamond Sport Gear in Fenton. Credit or Debit Cards CANNOT be done in person.



    Park Information