I'm a casino games expert with a keen interest in the rules and strategies of blackjack. As someone who has spent considerable time studying the intricacies of the game, I am well-versed in the various scenarios that can occur during a blackjack hand, including the situation where both the player and the dealer have a blackjack.

In blackjack, a blackjack, also known as a natural 21, is when a player's first two cards are an Ace and a 10 or a face card, which totals 21. This is the highest possible hand in blackjack and usually results in a win for the player, assuming the dealer does not also have a blackjack. However, if both the player and the dealer have a blackjack, the game's outcome is determined by a rule known as a "push."

When both the player and the dealer have a blackjack, it is considered a tie, and no money is exchanged between the player and the casino. This is because the odds of both parties having a blackjack are relatively low, and it is a rare event that showcases the element of chance inherent in the game. The dealer announces the result as a "push," indicating that neither the player nor the dealer has won the hand.

It is important to note that the timing of the dealer's hand revelation can affect the payout. If the dealer's face-up card is an Ace or a 10-value card, the player's blackjack is not paid out immediately. Instead, the dealer must reveal their hole card to determine if they also have a blackjack. This is because if the dealer's down card is a 10 or an Ace, making their hand a blackjack as well, the game would end in a push.

In summary, if both the player and the dealer have a blackjack, the game results in a push, and no money changes hands. The dealer's hand must be revealed to determine if a push is necessary, especially when the dealer's face-up card could potentially make their hand a blackjack.

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In the event your first two cards are an Ace and any 10 value card, the Dealer announces your hand as Blackjack. ... However, if the Dealer's face up card is an Ace or a 10 value card, you will not be paid until the Dealer's --hole-- card is known. If the Dealer's hand is Blackjack, it is a --push.--read more >>