Jokerless

When a player’s exposed 14-tile winning Mah Jongg hand does not contain a Joker tile. 

A Mah Jongg hand without Joker tiles doubles the hand value of the winning hand

The doubling of the value of the hand does not apply to any of the hands in the “Singles and Pairs” section of the NMJL Card as the value of these hands already takes into account that Joker tiles can not be used in these hands.