1. 15.1. A breach of the rules due to non-minor contact between two or more opposing players is a foul.
2. 15.1.1. A player intentionally initiating minor contact is still a breach of the rules, but is to be treated as a violation, and not a foul.
3. 15.2. A breach of the rules regarding a Marking or Travel breach is an infraction.  Infractions do not stop play.
4. 15.3. Every other breach of the rules is a violation.
5. 15.4. Only the player fouled may claim a foul, by calling “Foul”.
6. 15.5. In general only the thrower may claim an infraction, by calling the specific name of the infraction.
7. 15.5.1. However any offensive player may call a double team, and any defensive player may call a travel infraction.
8. 15.6. Any opposing player may claim a violation, by calling the specific name of the violation or "Violation", unless specified otherwise by the particular rule.
9. 15.7. When a foul or violation call is made that stops play, players must stop play by visibly or audibly communicating the stoppage as soon as they are aware of the call and all players should echo calls on the field. If play has stopped for a discussion without any call having been made, a call is deemed to have been made when the discussion started.
10. 15.8. Calls must be made immediately after the breach is recognised.
11. 15.9. After a player initiates a stoppage incorrectly, including after mishearing a call, not knowing the rules, or not making the call immediately:
12. 15.9.1. if the opposition gains or retains possession, any subsequent play stands.
13. 15.9.2. if the opposition does not gain or retain possession, the disc must be returned to the last non-disputed thrower, unless 16.3 applies. The stall count resumes as if an accepted breach has been caused by the player who initiated the stoppage incorrectly.
14. 15.10. If the player against whom the foul, infraction or violation has been called disagrees that it occurred, or does not think it is a correct call, they may call “Contest”.
15. 15.11. If a player making any call subsequently determines that their call was incorrect, they can retract the call, by calling "Retracted". The stall count resumes as if an accepted breach has been caused by that player.
16. 15.12. If multiple breaches occur on the same play or before play stops, the outcomes should be resolved in reverse sequence (latest breach first, earliest breach last).
17. 15.13. Players are encouraged to use the WFDF Hand Signals to communicate all calls.