Here’s a list of typical point values encountered during tournament play. Positive points are added to the base value of a winning hand, as indicated on the National Mah Jongg League card. Negative points come into play in specific situations.

+10 (Plus ten) points to the hand value when a player picks their winning tile.
+20 (Plus twenty) points to the hand when a player wins a hand with no jokers (excluding Singles and Pairs hands).
+10 (Plus ten) In the event of a wall game. Players who declared Mah Jongg in error or had a hand declared dead are disqualified and will receive zero points for that game.
-0- (Zero) points, in the event of an incomplete game.
Penalties
-0- (Zero) points to a player with a hand declared
-0- (Zero) (0) points to a player with a Mah Jongg in
-0- (Zero) points to a player who throws in their hand after a Mah Jongg in If all but one player throws in their hand, the player with their hand intact receives ten (+10) points.
-10 (Minus ten) points to a player who peeks at a blind
-10 (Minus ten) points to a player who discards the winning tile to a hand with no exposures or one
-20 (Minus twenty) points to a player who discards the winning tile to a hand with two
-25 (Minus twenty-five) points to a player who discards the winning tile to a hand with three exposures or two exposures in a Quint hand.
-25 (Minus twenty-five) points to a player who misnames a discard resulting in Mah Jongg. The winner gets the value of the hand they were attempting to play.

This is a common statement made by tournament directors or written on the scorecard; Be sure and verify your score is correct. Once score cards on turned it they cannot be altered.