Chumash is a lacrosse game played by two teams of 3 players each.
Each team may have one substitute. There is one goal in the center of the field. The purpose of each team is to score on its respective side of the goal. Short sticks only.
 

THE FIELD
The Chumash field is 50 yds long and 25 yds wide. The 6' high, 12" wide goal is centered in the crease, and the net shall be centered or sandwiched in the frame to accommodate shots from both sides. 20 yds from the goal line and 5 yds from the boundary on each end there shall be a dotted restraining or "take back" line. There is no "safe" zone behind the "take back" line. A player can be legally pushed out of bounds anywhere on the field.

The game shall be controlled by one official

PLAY OF THE GAME, TIME FACTORS, ETC.
A game will consist of two ten-minute running clock halves. There are no timeouts.

THE SMALLER CREASE
There are two creases in the game of Chumash. The first is a regular lacrosse goal crease with a nine-foot radius. The goal is centered inside this circle. There is no goalie and it is illegal to "guard" the goal in Chumash. . No one can go in the smaller crease unless the ball is down in there. Then, the player may only pick up the ball and leave immediately. Failure to do so will result in a technical foul and loss of possession.

THE BIGGER CREASE
The second crease uses the same arc. The top of the arc is 10-12 yards from the goal line. Players may move through this larger crease with or without the ball. They may not stop nor may they shoot from inside the larger or smaller crease. Players can "dive", but they may not land in the smaller crease ever. If they do it is no goal and possession is awarded to the other team.

GAME PROCEDURES
Initial possession of the ball to start the game shall be determined by a face-off. The team that wins the draw must take the ball back to its take back line. The team that gains first possession must take the ball back to their restraining line. If a team fails to do this it is a technical foul and the ball is awarded to the other team. Determine each team's "take back" line before starting play.

When there is a clear change of possession the team with the ball must pass or carry it back to the restraining line in front of their goal. If a team fails to do this it is a technical foul and the ball is awarded to the other team.

GOAL CREASE PRIVILEGES

When the ball is on the ground in the crease, players from both teams are allowed to be inside the designated crease area. After possession is gained, the ball must be immediately carried or passed out of the crease. Failure to do so is a technical foul and loss of the ball.

When the ball is in possession of team A, a player from Team B is allowed to be in the crease only if they are continually moving through it.
A defensive player (team B) may not take a position to defend the goal while in the crease. A defensive crease violation will result in a man down situation for Team B, as per NCAA rule on a technical foul with possession.

OTHER GAME PROCEDURES

Most play of the game falls under the guidelines of the NCAA
(boys) rule book.

There are no rules governing time for ball advancement, etc.

5 yard rule strictly enforced on inbounds play, interference, etc.

The integrity with which you play brings honor to the game.

PERSONAL FOULS

Personal fouls are illegal body checking, slashing, tripping, and cross-checking as per NCAA rules.

Exception: There is no "brush" call. Any touch of the head or face is an automatic personal foul.

On a personal foul the ball is awarded at the restraining line. The offended team doesn't have to clear the ball.

TECHNICAL FOULS

Technical fouls are interference, illegal screen, holding, warding off, pushing, and withholding the ball, crease violations, and other technical infractions outlined in the NCAA rule book.

On a Technical foul, the ball is awarded at the goal line extended, and just inside the sideline. The ball must then be cleared to the restraining line.

PENALTY ENFORCEMENT

On personal fouls, the offender must go to the sideline until there are 2 shots taken, or until his team gains possession of the ball, or there is a goal scored by the team with the advantage.

On technical fouls, the offending player must leave the field for 1 shot, or until his team gains possession of the ball, or there is a goal scored by the team with the advantage.