A disc is in play when play may proceed without the defense's acknowledgment. An in-bounds disc on the playing field is in play. The disc is subject to a turnover. To put the disc into play at a particular spot on the field means to establish a pivot at that spot.

A disc is live when players are allowed to move and the disc is subject to a turnover, but the thrower cannot make a legal pass (e.g., walking the disc to the spot where it is to be put into play). For a live disc to be put into play, the thrower must establish a pivot at the appropriate spot on the field, touch the disc to the ground, and put the disc into play.

Foul: Non-Incidental contact: contact between opposing players (see II.H for a definition of incidental contact). In general, the player initiating the contact has committed the foul.