Big Blind in poker (abbreviation BB) is the largest of the two obligatory blind bets made on preflop (blinds) in some poker variations.

The size of the big blind depends on the stakes you are playing (or blinds level in tournaments) and is almost always twice bigger the size of the small blind (with rare exceptions in land based casinos and some online poker rooms. As a rule, the exception is online cash games (cash tables) with the following blinds: $0.02/$0.05 - NL5 and $0.10/0.25 - NL25).

Position of the big blind at the poker table is defined by the dealer’s position and is to the left of the small blind. Every new hand the dealer's position (consequently the positions of the blinds) moves clockwise. So if in the current hand you were in the big blind position, next hand you’ll be in position of the small blind and the hand after that - in position of the dealer and so on.

The player on the big blind position is the last to make a decision preflop and is the second in making the decision in the following betting rounds (with small blind always being the first in making the decisions after the flop comes).

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