Rules Analysis
WFDF 2017 Rules
11. Out-of-Bounds
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11.3.
3
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An offensive player who is not out-of-bounds is in-bounds.

What:
The 'Greatest': An offensive player realises that they cannot catch the disc in-bounds and jumps from an in-bounds position, catches the disc and throws it before they land out-of-bounds. Result: This is a valid pass.

Why:
Rule 11.3.1. states that an airborne player who jumped from in-bounds is still in-bounds. This lasts until the player lands out-of-bounds and by that time the player has already released the disc. Therefore, the disc is not out. A player is allowed to throw the disc while in the air, according to rule 18.2.1.1. Extra: A player may not catch their own "greatest" throw. That is a turnover (13.2.5). If there is a contested call regarding the catch after a "greatest", the player who threw the "greatest" should be treated as the last thrower. They should establish a pivot at the point on the field closest to where they released the disc (or on the goal line if this would result in a pivot in their attacking end zone).

This rule was changed from the previous rulebook version
This rule was added from the previous rulebook version
This rule has updates in the next rulebook version
11.3.3.

Contact between players does not confer the state of being in- or out-of-bounds from one to another.

11.3.3.
Children
11.3.3.
Associates
WFDF 2021-24 Rules
11.3.4.

Contact between players does not confer the state of being in- or out-of-bounds from one to another.