I got 21 when playing blackjack and so did the dealer. Why didn't I win?
SINGLE DECK BLACKJACK is a variant of Blackjack sometimes known as "European no-hole", where the dealer does not initially receive a second ("hole") card. If the dealer later draws a Blackjack all bets (except Player Blackjack) including double downs and splits are lost. This also applies to Multi-Hand blackjack.