1. The official OKWiffle field is a pie shaped field which has three lines at 60, 80, and 90 feet representing the infield line (1), doubles line (2). and outfield wall (3). A fair play line (4)is located 12 feet down the lines as well.
2. The pitchers mound is 42 feet from home plate and 45 feet from the target strike zone.
3. A target strike zone is placed 3 (three) feet behind home plate and will measure 24" x 30" and 13" off the ground.
4. Team rosters consist of 1-3 players (2 fielders and a DH at the max size). All players on a roster must bat.
5. Teams must bat in the same batting order. Batting out of order will result in a penalty of an out.
6. Pitchers must finish the current at-bat and may only re-enter the game once more after initially appearing.
7. There are no restrictions on pitch speeds.
8. Official OKWiffle games are four innings in length. Championship games are five innings.
9. Each inning consists of either three outs or five runs per team. In the final inning a team may score ten runs.
10. A seven run mercy rule is in effect after the second completed inning.
11. Four balls - Walk.
12. Three Strikes - Strikeout.
13. Any pitch hitting the target strike zone but not swung at - Strikeout.
14. A ball must cross the fair play line to be fair.
15. Ball hit past the infield line - single.
16. Ball hit past the doubles line - double.
17. Ball hit off the outfield wall in the air - triple.
18. Ball hit over the outfield wall - home run.
19. Ground balls fielded before the infield line = out. Ball cannot come to a complete stop before being fielded or touch the ground after being fielded.
20. Double Plays may be attempted at any time, regardless if there are runners on base. Any fielded ball for an out (ground ball or pop fly) can be thrown to the strike zone. If the throw hits the strike part of the zone in the air = 2 outs. No runners are removed from the bases for the extra out.
21. All Base runners are imaginary and move as follows: one base on a single or a fair ball putout, three bases on a double or triple. With two outs, runners move an extra base on a clean outfield single.
22. All extra innings start with the bases loaded.
23. Batters may not move into the path of pitches. Batters will receive a warning (and a no-pitch) first and then a strike out for all subsequent violations.
24. The batter's hands are part of the bat.
25. Pitchers get 10 warm-up pitches before a game and 7 before an inning. There are no balks but pitchers must pitch from the rubber.

1. The official baseball-sized Wiffle Ball with 8 oblong holes (patent no. 1149044) is the official ball of OKWiffle.
2. A regulation bat for OKWiffle must be rounded on all sides, while not exceeding thirty-eight (38) inches in length, two and three-quarters (2 3/4) inches in diameter. Bats not meeting this criteria will be deemed illegal for use.
3. Spikes/cleats are prohibited. Players should wear sneakers for proper footwear.
4. No baseball gloves are allowed.
5. Uniforms are encouraged but not required.
6. Tournament format will be decided by the tournament director.
7. During round robin games, a coin toss determines the home team. During playoff games, the higher seed gets to pick home or away.
8. There are no refunds of tournament fees.
9. All players will conduct themselves in a sportsmanlike fashion. Taunting, berating or other type of disrespectful conduct towards opponents and/or league officials will not be tolerated. Any violations may result in an ejection from the game and/or tournament.
10. The tournament director is in complete charge of the tournament.

1. Fair and foul balls are the responsibility of the batter.
2. Singles, doubles, triples will be the responsibility of the fielder closest to the ball.
3. Check swings are the responsibility of the pitcher.
4. Foul balls off the hands are the responsibility of the batter.
5. Batters interference is the call of the pitcher.
6. The offense is responsible for determining if defensive plays are executed as the rules state.