The Baseball Ontario Rules Committee has made the following rule changes to the Baseball Ontario rules for the 2019 season:
- Amended P2.10 to permit a No-Pitch Intentional Walk
- Amended P7.3 to exclude teams from a tiebreaker if they have a forfeit loss during tournament play
- Amended Q2.3 g) to permit all runs to score on a game-ending home run in the Rookie Ball division, up to the 7 run per inning maximum
- Amended P2.9 b) to also allow a pinch-hitter to enter the game for the pitcher of record, with the pitcher of record being eligible to return to the mound under the re-entry rule, provided they return to pitch immediately upon the start of the next defensive inning
- Added P7.3 to clarify that the final score of any game ended by a game length rule will be the score at the time the game ends regardless of whether an inning was incomplete
- Amended P5 u) to update responsibility of Playoff Convenor to submit game reports
- Amended P6 n) to modify roster limits for Elimination Tournaments
- Added P3 j) to address umpires returning from an absence of one or more years
- Amended P2.5 c) to permit players below Pee Wee to wear a helmet without a chinstrap if the chinstrap cannot be attached due to the addition of a manufacturer installed face guard (C-Flap).
- Added p2.8 h) and i) to permit affiliations between Senior AAA and Junior teams
- Added P2.8 j) limiting the number of Junior or Midget call-ups to a Senior roster for Eliminations
- Added Appendix C to address draft for players when two (or more) teams are representing Ontario at the Senior Men’s Nationals