Additional Rules ResourcesThe following documents, papers, infographics, and other resources provide further explanation of the Rules. Rules Documents Papers Infographics Rules Documents 2021 USGA Hard Card Local Rules and Terms of the Competition (Hard Card) for 2021 USGA Championships. Rules Clarifications A list of Clarifications made to the Rules of Golf that took effect on January 1, 2019. New Limits to Green-Reading Materials New limits to green-reading materials that took effect on January 1, 2019. TIO Explanatory Diagrams These diagrams help to explain relief from Temporary Immovable Obstructions (TIOs), which are covered by Model Local Rule F-23 in the Official Guide to the Rules of Golf. Mapping of Decisions to 2019 Rules of Golf This helpful chart shows where all of the 2016 Decisions can be found in the 2019 Rules of Golf. Papers Watch and Read: Overview of the Biggest Rules Overhaul Since 1984 This paper gives a detailed look at all that went into the Rules Modernization process leading up to the major revision of the Rules in 2019. Explanation for Each Major Change in the Rules of Golf for 2019 This paper gives you a detailed look at each major change introduced in the Rules in 2019, including the reasons behind why they have been made. Certain Topics or Proposals Not Addressed in Golf's New Rules for 2019 Learn more about a number of suggestions that were considered as part of the 2019 revision ot the Rules, and why they were not included in the end. A Brief History of Revisions to the Rules of Golf: 1744 to 2018 This paper details the continuous evolution of the Rules that has occurred for nearly three centuries, and which is part of the game's tradition. A Revised Approach to Writing and Presenting the New Rules for 2019 A major objective of the Rules Modernization initiative (concluded in 2019) was to make the Rules easier to understand and apply, and this paper explains how we've done that through the new writing style and format. Major Changes in the New Rules of Golf for 2019 This chart identifies the 2019 changes expected to have the most impact on the game and to be of most interest to golfers. Infographics 15 Rules Every Golfer Should Know 5 Key Changes to the Rules Stroke and Distance: New Local Rule Golf's New Rules: At Your Fingertips Anchoring the Club Distance-Measuring Devices (DMDs) Golf's New Rules: Pace of Play Improvements Golf's New Rules: Player Conduct Additional Infographics Click here to view some smaller, topic-specific infographics covering changes to the Rules that occured with the 2019 Rules update.