When a player has four cards in his hand of the same suit and is hoping to draw a fifth to make a flush.
The no-limit version is often described as the "Cadillac of poker, taking only a A flush is any five cards all of the same suit (i.e., all diamonds or all spades, etc.).
What hands are rank highest in Poker. Flush Any five cards of the same suit, but not in a sequence. 4 J 8 2 9. 6. Straight Five cards in a sequence, but not of.