WORDS RULE
From Ask Marilyn
Parade Magazine
July 16, 2017
Marilyn vos Savant

These words follow a rule:
BALL, BAT, GLOVE, MASK

These words don't follow it:
BASEBALL, BATTER, CAP, MITT

What's the rule?

Answer:

New words are formed when the first letters are dropped:

ALL, AT, LOVE, ASK