The OASA welcome all Associations and teams to advertise their own tournaments with us. Please send all information regarding your tournament to dave.northern1@gmail.com
| Date | Series | Location | Contact Info | Details |
| May 23 – 25, 2025 | U13 and U17 Boys | Wilmot Township | Mike Carey, mcarey@wilmotthunder.com | To be announced |
| May 30 – June 1, 2025 | U15 and U20 Boys | Wilmot Township | Mike Carey, mcarey@wilmotthunder.com | To be announced |
| May 23 -25, 2025 | U13 and U15 boys | Alexandria Park, Oshawa | Wes Vezza, Oshawa BBs, wesvezza@gmail.com | 3 game guarantee, $400 entry fee Oshawa Double B Sports Club |
| June 13-15, 2025 | U13 | Frankford | Brian Blakely, frankfordflyersfastball@gmail.com | $475 entry fee, 3 game guarantee |
