Another easy-to-understand and sensible rule change for 2019 involves the embedded ball.
In the past, relief for a ball embedded below the ground in its own pitch mark was granted only in a closely-mown area unless a local rule granted relief “through the green” (any area of play except sand bunkers and hazards).
For 2019, the rule is wisely reversed: relief is always granted for any an embedded ball in the “general area” (the new terminology for “through the green”) unless a local rule restricts relief only to closely-mown areas — and such a local rule would almost never be invoked.
The drop is taken from knee height and must come to rest within one club length behind the pitch mark.
2019 USGA Rules Review: Embedded Ball Relief >
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