Question: During my game today, a player called a discarded tile at the same time another player picked their tile from the wall and racked it. What happens when this occurs?

Answer: When there is a simultaneous pick from the wall and rack at the same time another player calls a tile, preference is given to the player who called the tile.  The only exception is if the picked tile is for Mah Jongg as Mah Jongg always trumps.  This rule is not in Mah Jongg Made Easy.

Source: National Mah Jongg League Bulletin Q&A (2020) and a call to the NMJL by a player on 12/20/2023