winning opening

15 LETTERS · STARTS WITH W

winning opening is a valid 15-letter word worth 21 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
W4I1N1N1I1N1G2O1P3E1N1I1N1G2
4 + 1 + 1 + 1 + 1 + 1 + 2 + 0 + 1 + 3 + 1 + 1 + 1 + 1 + 2 =21 PTS
DOUBLE WORD → 42TRIPLE WORD → 63
MEANING

What does winning opening mean?

1