Leave the Flag In
Rules
Explained Simply
Under 2019 rules, you may putt with the flagstick in the hole and receive no penalty if the ball hits it.
Example
“You're 30 feet away. Leave the flag in — if the ball hits the flag at speed, it may drop in rather than lip out.”
Why it matters
Speeds up play and may help on long putts (flag can prevent the ball from rolling past). It's now the default for many players.
Common beginner mistake
Reflexively removing the flag on every putt out of habit — the new rule actively allows and often benefits leaving it in.
Related
beginner
Rules