BASEketball Rules | Recreational Services
The University of Iowa

BASEketball Rules

Rule 1: Facility | Rule 2: Player Eligibility | Rule 3: Team Composition | Rule 4: Equipment 
Rule 5: The Game | Rule 6: The Court | Rule 7: Defense | Rule 8: Offense | Rule 9: Court Diagram

Recent rule changes appear in italicized font.

Rule 1: Facility

  1. All games will be played at the Field House Main Deck.

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Rule 2: Player Eligibility

  1. All Intramural Sports eligibility rules apply. Please check the Intramural Sports Rules and Regulations carefully.
  2. All players must check-in with a University of Iowa or Government-Issued photo ID with the scorekeeper prior to the start of each game.

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Rule 3: Team Composition

  1. The game shall be played between two teams of four to six players. A minimum of four players are required to prevent a forfeit. A team may have a maximum of six players that can be on a team’s roster.

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Rule 4: Equipment

  1. All players must wear athletic shoes.

Rule 5: The Game

  1. Each game starts with a coin toss or paper, rock, scissor. The winner of the coin toss or rock, paper, scissor match shall have the choice of being home or away.
  2. A minimum of four players must be present to start an official game. If less than four players are present and ready to play (signed-in, dressed properly etc.), the game will be declared a forfeit 10 minutes after the scheduled game time.
  3. A batting order must be given to the official or supervisor on duty before the game starts. If a team bats (shoots) out of order then this will be considered an automatic out. 
  4. Each game will be nine innings in length or have a 40-minute time limit beginning after the first shot. The Official or Supervisor on duty will determine the official start time. No inning will start after the time limit has been reached.


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Rule 6: The Court

  1. A BASEketball court is the combination of a baseball field and a basketball court. There are four bases located on the court. There are shooting spots radiating from the hoop: three single squares, three double squares, and three triple squares, one home run square and two bunt squares. The two shooting locations closest to the basket are used for bunts.
    • Single Squares are located at the free-throw line
    • Doubles Squares are located at the top of the key
    • Triples Squares are located at the 3-point line
    • Home Run square is located at half-court and is also second base
    • Bunt Squares are located next to the basket

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    Rule 7: Defense

    1. Defensive Alignment: There are three defensive players on the field. Two are located in the “outfield” waiting to rebound any missed shot. The other is located next to the shooter, attempting to psyche-out the offensive player.
      • Psyche-Outs: A diversionary tactic to break the shooter's concentration in an attempt to make them miss a shot.
      • An individual on defense is NOT allowed to commit any of the following offenses when participating in a psych-out:
        • Making contact with the shooter;
        • Use of props;
        • Any use of language or verbalization (sound effects are ok);
        • Limiting line of sight or impairing vision of shooter;
        • Degrading or inappropriate gestures;
        • Removal of clothing;
        • Any other tactic deemed inappropriate or offensive by the official.   
          • If the shot is missed, a walk is issued. Player is subject to discipline.
      • There is NO “double teaming” in psyche-outs.
      • A player may NOT participate in back-to-back psyche-out attempts.
    2. Double Plays: If there are runners on base, and a shot is missed, the defense has the opportunity to tip in the missed shot for a double play. The defensive player can NOT have contact with the ground when tipping in the missed shot.
      • The defensive team only has one chance for the tip in
      • The offensive player closest to home is the second player ruled out in the double-play.
    3. ​​​​​​​There are NO triple plays. 


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    Rule 8: Offense

    1. The batting line-up consists of 4-6 players.
    2. Shot Selection: Whatever square you shoot from is the amount of bases you are awarded if the shot is made.
      • All runners on base will also move that same number of bases​​​​​​​​​​​​​​
    3. Shot Repetition: During a half-inning, a team may not take a shot from a previously used square until they have tried all available squares (10 in total). Homeruns can be attempted at any time.
    4. Outs: Failure to make a shot is an OUT.
    5. Conversions: During a double-play attempt, if the defense misses the tip in, the offense has the chance to tip in the missed shot for a conversion.
      • Any player on base is allowed to leave the base they are occupying and attempt the tip in. If this tip in is made, the batter is awarded the base he shot for.
    6. Bunting: A player may bunt at any time. When bunting, it is a sacrifice out. Runners advance one base each. With a bunt, no tip-ins or psych-outs are allowed.


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    Rule 9: Court Diagram

    Blue Circles = Bunts     Orange = Singles     Green = Doubles     Purple = Triples     Red = Homerun     Blue Squares = Bases



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