Biggest rules/mechanics changes of the last 5 years

[BillyMac]

Beginning with the 2022-23 season, a 35-second shot clock will be permitted in high school basketball games by state association adoption. A proposal for a national rule mandating a shot clock was not approved.

Rule 2-14 states that each state association may adopt a shot clock beginning in the 2022-23 season -- according to guidelines outlined in the Basketball Rules Book -- to encourage standardization among states. Guidelines include displaying two timepieces that are connected to a horn that is distinctive from the game-clock horn, and using an alternative timing device, such as a stopwatch at the scorer’s table, for a shot clock malfunction. The guidelines also allow for corrections to the shot clock only during the shot-clock period in which an error occurred and the officials have definite information relative to the mistake or malfunction.

Rule 3-5-4e was added to allow players to wear head coverings for religious reasons without obtaining state association approval. The head covering shall not be made of abrasive or hard materials and must be attached so that it is highly unlikely to come off during play.

The official signals were also modified to use the same hand signal for a player control foul and a team control foul. Officials should use Signal 36, which is a hand placed at the back of the head, for both types of fouls. Previously, a team control foul was communicated with a punch of the hand.