What is the crossword answer for the clue: Season opener?

ESS - a 3 letter word may be the answer you are looking for!

MID - a 3 letter word may be the answer you are looking for!

PRE - a 3 letter word may be the answer you are looking for!

SSE - a 3 letter word may be the answer you are looking for!

FIRSTBALL - a 9 letter word may be the answer you are looking for!

Season opener?

3 Character Answers:

ESS

MID

PRE

SSE

9 Character Answers:

FIRSTBALL