Answer: openingday

AnswerCrossword Clue
OPENINGDAY

Season beginner

OPENINGDAY

Annual rite of spring

OPENINGDAY

Season starter

OPENINGDAY
Baseball season beginner
OPENINGDAY
Baseball milestone
OPENINGDAYDecember 25?
OPENINGDAYGood time to use your ace
OPENINGDAYDecember 25, in a way?
OPENINGDAYWhen lots of popcorn and peanuts are sold
OPENINGDAYStart of the baseball season ... or what the start of each starred clue is?