If a player’s ball comes to rest against the flagstick left in the hole:

• If any part of the ball is in the hole below the surface of the putting green, the ball is treated as holed even if the entire ball is not below the surface.
• If no part of the ball is in the hole below the surface of the putting green:
  • The ball is not holed and must be played as it lies.
  • If the flagstick is removed and the ball moves (whether it falls into the hole or moves away from the hole), there is no penalty and the ball must be replaced on the lip of the hole (see Rule 14.2).

Rule – 13.2c