Five of Clubs: "Watson’s card". The name has nothing to do with Sherlock Holmes but refers to a famous gambler who is supposed to have won £10,000 at Faro through his wager in connection with this card.Blackjack was not conceived by any one person at one definite point of time. On the contrary, blackjack has evolved over centuries; it continues to evolve and grow even today, thanks to the Internet. Fuelling its popularity the online casino industry has developed various versions of the game which has truly revolutionized it.