1. Out of Bounds – Rule 27
When the inside edge of a road or curb defines out of bounds, a ball that crosses such boundary is out of bounds even though it may lie on another part of the course.
2. Water Hazards and Lateral Water Hazards – Rule 26
Water hazards are defined by yellow lines.
Lateral Water Hazards are defined by red lines.
3. Abnormal Ground Conditions – Rule 25
Ground Under Repair
- Areas completely encircled with white lines
- French drains filled with stones
- Seams of turf – Page 145
- Fire ant mounds or beds
4. Embedded Ball Through the Green – Pages 142-143
Through the green, a ball that is embedded in its own pitch-mark may be lifted, without penalty, cleaned and dropped as near as possible to where it lay but not nearer the hole.
5. Aeration Holes – Page 145
Through the Green, a ball that comes to rest in or on an aeration hole may be lifted without penalty, cleaned and dropped as near as possible to the spot where it lay but not nearer the hole.
On the putting green, a ball that comes to rest in or on an aeration hole may be placed at the nearest spot not nearer the hole that avoids the situation.
6. Stones in Bunkers – Pages 145-146
Stones in bunkers are movable obstructions (Rule 24-1 applies).
7. Distance-Measuring Devices – Page 153
For all play, a player may obtain distance information by use of a distance-measuring device. If, during a stipulated round, a player uses a distance-measuring device to gauge or measure other conditions that might affect his play (e.g. elevation changes, wind speed, etc.), the player is in breach of Rule 14-3.
8. Environmentally Sensitive Areas (ESA) – Pages 140-142
An ESA is an area so declared by an appropriate authority, entry into and/or play from which is prohibited for environmental reasons. If the ball is found in or if it is known or virtually certain that a ball that has not been found is in an ESA defined as a water hazard or lateral water hazard, the player must, under penalty of one stroke, proceed under Rule 26-1.
9. Integral Parts of the Course
- Wrappings, wires, and other objects when closely attached to trees.
- Artificial walls, pilings and split rail fences
10. Temporary Power Lines or Cables – Pages 150-151
If a ball strikes an elevated power line or cable, the stroke is cancelled and the player must play a ball as nearly as possible at the spot from which the original ball was played in accordance with Rule 20-5 (Making Next Stroke from Where Previous Stroke Made).