The PGA Tour opened its 2026 season at the Sony Open in Honolulu with more than just a new group of players chasing FedEx Cup points. Six rule changes went into effect alongside it, five new model local rules plus a modification to the Tour’s preferred-lies policy, all approved by the USGA and R&A on January 1, 2026. According to Steve Rintoul, the PGA Tour’s vice president of Rules and Officiating, the goal wasn’t to reinvent the game. It was to fix a handful of situations that had been producing outcomes that felt unfair, confusing, or just plain wrong, several of which played out in very public, very frustrating ways for tour pros over the past few years.
Here’s what actually changed, the real incidents that drove each decision, and where you can go to read the official rule text yourself.
1. Unaware Ball Movement Now Gets a Lighter Penalty
What changed: If a player accidentally causes their ball to move but has no idea it happened, they now face a one-stroke penalty instead of two, as long as they genuinely didn’t know and had no reason to suspect the ball had moved.
Why it happened: This one is a direct response to Shane Lowry’s ordeal at the 2025 Open Championship at Royal Portrush. Lowry’s practice swing on the 12th hole fractionally moved his ball, something he had no idea had happened until officials showed him a close-up replay after the round. He was hit with the full two-stroke penalty for not replacing a ball he didn’t know had moved. Rintoul said that outcome “didn’t feel right,” and the new rule now bases the penalty on what the player actually knew, not just what a slow-motion camera eventually revealed.
Read the official rule: USGA Rule 9 – Ball Played as It Lies; Ball at Rest Lifted or Moved
2. Free Relief Now Applies to Anyone’s Pitch Mark, Not Just Your Own
What changed: If your ball comes to rest in a pitch mark, even one left by a different player’s shot, you can now take free relief. Previously, relief was only guaranteed if it was your own pitch mark, and proving whose mark it actually was could turn into a guessing game for officials.
Why it happened: This exact bad break has cost players real tournament positions. At the 2002 Players Championship, Paul Casey’s tee shot on the par-5 16th settled into another player’s pitch mark, forcing a layup that likely cost him a shot at the win. Shane Lowry (again) ran into the same issue at the 2025 PGA Championship, was denied relief, and visibly took his frustration out on the turf. Rintoul acknowledged the Tour was “getting this ruling wrong” often enough that it stopped being a good look for the game.
Read the official rule: USGA/R&A “Additional Clarifications of the 2023 Rules of Golf” (see Model Local Rule E-14)
3. Internal Out of Bounds Now Only Applies to Tee Shots
What changed: Courses that use internal out-of-bounds markers, often installed to stop players from cutting across an adjacent fairway, can now only enforce that boundary on shots played from the tee. After the tee shot, those same stakes are simply treated as obstructions.
Why it happened: Internal O.B. was originally installed at holes like Waialae (host of the Sony Open) and the famous 18th at TPC Sawgrass to stop players from bombing tee shots down a neighboring fairway for an easier angle. The unintended side effect: a player who hit a poor tee shot and ended up stuck behind a tree couldn’t even chip out sideways if that internal boundary was in the way, a real penalty for a player the rule was never designed to punish in the first place.
Read more: GOLF.com: Internal Out of Bounds, Explained
4. Expanded Relief From Obstructions Near the Green
What changed: Players can now get relief from a wider range of immovable obstructions close to the green, not just sprinkler heads, when putting or chipping from just off the putting surface. Things like microphone holes or turf damage from a removed obstruction are now covered too.
Why it happened: The Tour already allowed relief for sprinkler heads interfering with a shot from the fringe, but had no clear answer when a broadcast microphone was pulled up and left a hole in almost the exact same spot. Rintoul summed up the old inconsistency simply: if it was a sprinkler head, officials could help; if it was anything else, there just wasn’t a rule that covered it.
Read the official rule: USGA/R&A “Additional Clarifications of the 2023 Rules of Golf”
5. Damaged Clubs Can Be Repaired or Replaced More Easily Mid-Round
What changed: If a club breaks or is significantly damaged during a round (not from abuse), a player can now repair or replace it using components already in their own bag, or another player’s bag on the course, without needing to send someone back to the clubhouse for a spare part.
Why it happened: This was purely about efficiency. The old process could mean a long delay while a replacement part got tracked down. Rintoul noted that if a player already has a spare clubhead in the bag, there’s no good reason not to let them use it, and doing so doesn’t count as carrying an illegal 15th club.
Read the official rule: USGA Rule 4.1 – Player’s Clubs (see Model Local Rule G-9)
6. Preferred Lies Relief Area Shrunk From Club-Length to Scorecard-Length
What changed: When preferred lies (commonly called “lift, clean, and place”) are in effect due to poor course conditions, the relief area has been reduced from a full club-length, roughly 46 inches, down to the length of a scorecard, about 11 inches.
Why it happened: This was less about a single controversial incident and more about the Tour catching up to everyone else. Nearly every other major golf organization already used a shorter relief distance, and a full club-length in each direction (92 inches of total range) gave players enough room to meaningfully improve their lie or even shift onto different grain in Bermuda rough. Rintoul said modern course conditioning simply doesn’t require that much room anymore, and the change was driven largely by player feedback.
Read the official rule: USGA Rule 6.2 – Teeing Area and Preferred Lies (Local Rules Topic)
Does Any of This Affect Your Weekend Round?
Mostly, no, and that’s by design. Several of these changes (internal out of bounds, extra relief near greens, preferred lies) are Model Local Rules, meaning they’re optional provisions a committee can choose to adopt for a specific competition, not blanket changes to the core Rules of Golf. Your home course was very likely not using internal out-of-bounds stakes or preferred lies to begin with, so nothing changes for your Saturday foursome.
The two that matter more broadly, the unaware ball movement penalty reduction and the expanded pitch-mark relief, come from the official “Additional Clarifications of the 2023 Rules of Golf,” which means they apply to the actual Rules of Golf everyone plays under, not just PGA Tour events. If you’ve ever second-guessed whether your ball moved during a practice swing, or gotten a bad break landing in someone else’s divot, these updates are genuinely worth knowing.
Where to Read the Full Rules Yourself
If you want to go straight to the source rather than take anyone’s summary of it, the USGA maintains the complete, official Rules of Golf online:
- USGA Rules of Golf Hub, the full rulebook, searchable by topic and rule number
- Additional Clarifications of the 2023 Rules of Golf, the official document containing all six of the changes covered above, including the exact Model Local Rule language
- R&A Rules of Golf, the joint governing body’s version of the same rulebook, since the USGA and R&A write and approve the Rules of Golf together
Any Season Bottom Line
None of these six changes are going to change how you play golf this weekend, and that’s genuinely the point. They’re targeted fixes for specific, recurring situations that were producing outcomes even the players and officials involved knew didn’t feel right. Whether you play by these rules every week or never touch a Model Local Rule in your life, it’s worth knowing what’s changed, if only so you’re not caught off guard the next time a rules controversy plays out on TV and someone in your group asks what actually happened.