A few changes have been made to the USA Pickleball Rule Book for 2023. Probably the most interesting for “amateur” players is the rule eliminating player out of position penalty.
Here’s the essence of the new rule:
4.B.9.a. If the referee or a player stops a rally in progress to correctly identify a player/position error, the rally shall be replayed. If a player stops a rally and incorrectly identifies a player/position error, it is a fault on the player who stopped the rally. If the referee stops a rally in progress and incorrectly identifies a player/position error, the rally shall be replayed.
If you want the actual rule change details go to https://usapickleball.org/news/mid-year-revisions-to-the-2023-usa-pickleball-rulebook/
If you want a great explanation of the new rule as it relates to non-officiated play, check out The Pickler article by Mark Peifer