When. The short answer is nothing. An ace-high straight flush, commonly known as a royal flush, is the best possible hand in many variants of poker. Your odds of a royal flush are % in Texas Hold'em, with the odds against making a royal flush at 30,to The royal flush is known as the ultimate hand in Texas Holdem. Find out what a royal flush is and why it's significant here. This includes the four royal flushes (Diamonds, Spades, Clubs and Hearts). A Royal Flush in Texas Hold'em is guaranteed to win – the worst outcome possible with a Royal Flush would be splitting the pot with. So - the odds of hitting a royal flush would be 4/2,,, which would work out to. Each hand belongs to a category determined. The best Flush possible. The best possible straight flush is known as a royal flush, which consists of the ace. . The royal flush is a case of the straight flush. A flush is one of the most powerful Texas hold'em hands because it is only beaten by a handful of others. A flush is a relatively strong hand in Texas Hold'em with the highest possible flush being ace-high with all 5 cards in the same suit. A royal flush is the best and rarest hand you can get at the poker table. It can be formed 4 ways (one for each suit), giving it a probability of % and odds of , 1. Every poker player strives to be dealt a royal flush when they hit the tables. Any hand that that has five cards of the same suit is. In the event of a tie: Highest rank at the top of the sequence wins.