| DIVISION | HOST | CONTACT | EMAIL | DATES | HOST YEAR(S) |
| 8U AAA |
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| 8U AA | Brantford | Steve Knights | bmbatournys@gmail.com |
| 2025 & 2026 |
| 8U A |
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| 8U B | Leamington | Steve Marshall | sfmarshall83@gmail.com |
| 2025 & 2026 |
| 9U AAA |
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| 9U AA | Cambridge | Matt Yeaman | matt.yeaman@cmbaball.ca
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| 2025 & 2026 |
| 9U A | Tecumseh | Brendan Lane | blane@tmba.ca |
| 2025 & 2026 |
| 9U B | Chatham | Ryan Presley | tournaments.cmba@gmail.com |
| 2025 & 2026 |
| 9U C |
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| 9U D | Dresden | Ryan McFadden | mcfaddenagservices@gmail.com |
| 2025 & 2026 |
| 10U AAA |
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| 10U AA | Brantford | Steve Knights | bmbatournys@gmail.com |
| 2025 & 2026 |
| 10U A |
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| 10U B |
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| 11U AAA | Riverside | Tom Laporte | tlaporte3@cogeco.ca |
| 2025 & 2026 |
| 11U AA |
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| 11U A |
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| 11U B | Pelham | Kevin deboer | rep@pmba.ca |
| 2025 & 2026 |
| 11U C |
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| 11U D |
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| 12U AAA | Waterloo | Ken Vander Vleuten | ken.vandervleuten@waterloobaseball.ca |
| 2025 & 2026 |
| 12U AA |
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| 12U A | Quinte | Chad Crawford | chadcrawford5@gmail.com |
| 2025 & 2026 |
| 12U B | Chatham | Ryan Presley | tournaments.cmba@gmail.com |
| 2025 & 2026 |
| 13U AAA | Vaughan | Dirk Drieberg | double.d@rogers.com |
| 2025 & 2026 |
| 13U AA | Mississauga SW | Bruce Thompson | clubhouse@msbabaseball.ca |
| 2025 & 2026 |
| 13U A |
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| 13U B | Muskoka | Peter Haynes | muskokahornets@rogers.com |
| 2025 & 2026 |
| 13U C | Welland | Greg Leone | greg@wellandminorbaseball.ca |
| 2025 & 2026 |
| 13U D |
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| 14U AAA | Etobicoke | Steve Watson | watson_s@rocketmail.com |
| 2025 & 2026 |
| 14U AA | Brantford | Steve Knights | bmbatournys@gmail.com |
| 2025 & 2026 |
| 14U A |
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| 14U B |
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| 15U AAA | Vaughan | Dirk Drieberg | double.d@rogers.com |
| 2025 & 2026 |
| 15U AA |
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| 15U A |
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| 15U B |
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| 15U C | Thorold | Chris Ciolfi | chris_ciolfi@hotmail.com |
| 2025 & 2026 |
| 15U D |
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| 16U AAA | Aurora King | Aaron Preiano | marketing@akba.ca |
| 2025 & 2026 |
| 16U AA | Burlington | Frank Cadamone | tournaments@baseballburlington.com |
| 2025 & 2026 |
| 16U A | Quinte | Chad Crawford | chadcrawford5@gmail.com |
| 2025 & 2026 |
| 18U AAA | Hamilton | Jeff Schwoob | hamcardinalspresident@gmail.com |
| 2025 & 2026 |
| 18U AA |
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| 18U A |
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| 18U B | Chatham | Ryan Presley | tournaments.cmba@gmail.com |
| 2025 & 2026 |
| 18U C |
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| 22U AA |
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| 22U A |
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| 22U B |
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| SENIOR AA |
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| SENIOR A | Thorold | Carmine Ciolfi | cpciolfi@vaxxine.com |
| 2025 & 2026 |
| SENIOR B |
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| SENIOR C | Port Hope | Bobby Gilligan | bobbygilligan17@gmail.com |
| 2025 & 2026 |
