RDMBA Rules of Play

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League and Provincial play is governed by Baseball Alberta.  Click for a copy of the 2008 Baseball Alberta Rules and Regulations.


RDMBA Rec Program (House League) Rules

Supplementing the Baseball Alberta rules of play are a few guidelines established by RDMBA for the Mosquito, PeeWee and Bantam age groups.

- Maximum of three innings per pitcher per game.
- Once a pitcher has been removed from the game, he/she cannot be re-entered as a pitcher in that game.
- Unlimited substitution for fielding positions.
- No player shall sit more than two consecutive defensive innings.
- Everyone present for the game will be placed on the batting order.
- There will be a maximum of five runs allowed per inning with the last inning being open.
- No new inning shall start after 8:30 PM or as agreed upon by the coaches at the start of the game.
- Home team will supply the game balls.
- Home team will be responsible for preparing the diamond for play.  This includes dragging the infield and chalking the base paths.
- Home team will be responsible for scorekeeping.
- The batter's box is rectangular in shape, 3'x6' and extends forward and backward from the centre of home plate 3' with the inside line 4 inches from the edge of the home plate.

Mosquito Playing Field

- Distance from the front edge of the pitchers plate to the back point of home plate will is 44'.
- Distance between bases will be 60'.

PeeWee Playing Field

- Distance from the front edge of the pitchers plate to the back point of home plate will is 48'.
- Distance between bases will be 70'.

Bantam Playing Field

- Distance from the front edge of the pitchers plate to the back point of home plate will is 54'.
- Distance between bases will be 80'.