has no objections to the call. A common infraction, intentional or not, is a "pick" where the offense (or your own team member even) is somehow in the way of your pursuit of your "check" in man-to-man defense. This only applies when you started within 10 feet of your "check" and the game play is stopped so that the players involved go back to where the "pick" occurred. The integrity of ultimate depends on each player's responsibility to uphold the spirit of the game. Ultimate is predominantly self-refereed, relying on the on-field players to call their own infractions and to try their best to play within the rules of the game. It is assumed that players will not intentionally violate the rules and will be honest when discussing foul calls with opponents. This is called Spirit of the Game, or simply Spirit. After a call is made, the players should agree on an outcome, based on what they think happened and how the rules apply to that situation. If players cannot come to agreement on the call's validity, the disc can be given back to the last uncontested thrower, with play restarting as if before the disputed throw. Coaches and other players on the sidelines cannot make calls, however they may inform players of specific rules in the case of a contested call. Players on the sideline may also be asked for their view, as they often have "best perspective" to see what happened. A regulation outdoor game is played 7 7, with substitutions allowed between points and for injuries. Games are typically played to a points limit of 13/15/17 or more, or a time limit of 75/90/100 minutes. There is usually a halftime break and an allowance of two timeouts per team each half. A regulation field is by , including end zones each deep. Competitive ultimate is played in gender divisions using gender determination rules based on those of the IOC. Different competitions may have a "men's" or an "open" division (the latter usually being extremely male-dominated at competitive levels, but technically unrestricted). Mixed is officially played with 4 of one gender and 3 of the other, but variants exist for different numbers. Men's, women's, and mixed ultimate are played by the same rules besides those explicitly dealing with gender restrictions. Rulebooks: USAU, WFDF, AUDL Some rules vary between North America and the rest of the world. More