==Overview==
Chicago ball was invented by Adam "Spartacus" Herndon and Matt "Thulsa Doom" Sipple. The game was first played on October 3rd, 2007 during The Classics series, a series of nine alleycat bicycle races organized by Herndon and Sipple. The game is a mixture of rugby and bike polo.

Objectives

The object of Chicago Ball is to put the ball into the opposing teams' goal 21 times.

Rules

Similar to Calvinball, the rules of Chicago Ball are made up on the spot to cover some omission in the prior rules or to cover a loophole that could be exploited.

Equipment

Beach Ball, filled with .5L of material which maintains a liquid state above 32 degrees Fahrenheit and below 160 degrees Fahrenheit.

Goalposts in the field of play "proper", which are normally blinky lights set two bike lengths apart.

All players are required to ride a bicycle, but the make/model and type of bike is unrestricted, save for "hobby horse" types of bicycles which do not have pedals and require the player to place their feet on the ground.

Game Setup

Chicago Ball is played by two teams of more or less even size. Each team has one captain, chosen by committee after teams are divided. At the beginning of the game, each captain stands approximately 120' from the ball, which is located near both teams. The playing field proper should have

Gameplay

At the start of the game, the captains hug each other, and at the call of the organizer, sprint toward the ball. The first captain to pick the ball up gains posession as they mount their bicycles and begin the sprint towards the field of play, which is some blocks away. During the sprint towards the field of play, if the captain in possession drops the ball, the other team gains possession. Whomever holds the ball when they arrive at the field of play affords their team the right of possession as the field game begins.

During play, the following rules must be observed:

Players may not kick the ball

If the ball is on the ground, a player may put a foot down to pick the ball up. They may not begin to ride with the ball if their foot was on the ground when the ball was picked up.

Players on a goal attempt must have both feet off the ground

Players "tending" a goal must have both feet off the ground when performing a blocking action

No "t-boning" is allowed

Fouls Etc.

The gameplay may be halted at any time by the organizers. The organizers have complete authority over any foul calls.

Legal Considerations

The game does not have a proper spelling. "Chicago Ball" is most notably used on several team jerseys. Other spellings, such as "chicagoball" or "chicago ball" may be used, where required. No trademark exists for the term "Chicago Ball" as it is in public domain.