John Ferguson (born 1943) known by his pen name, Stanford Wong, is a gambling author best known for his book Professional Blackjack, first published in 1975. Wong's computer program "Blackjack Analyzer", initially created for personal use, was one of the first pieces of commercially available blackjack odds analyzing software. Wong has appeared on TV multiple times as a blackjack tournament contestant or as a gambling expert. He owns a publishing house, Pi Yee Press, which has published books by other gambling authors including King Yao.
Wong began playing blackjack in 1964 while teaching finance courses at San Francisco State University and getting his Ph.D in Finance from Stanford University in California. Not content with the teaching life, Wong agreed to be paid a salary of $1 for his last term of teaching at the school in order to not attend faculty meetings and to pursue his gambling career.
The term "wong" (v.) or "wonging" has come to mean a specific advantage technique in blackjack, which Wong made popular in the 1980s. It involves watching the play of cards in a game without actually wagering your own money, until the count becomes advantageous, and then stepping in and playing only while the count remains in the player's favor, and then stepping out again. "Wonging" is the reason that some casinos have signs on some blackjack tables saying, "No Mid-Shoe Entry", meaning that a new player must wait until exactly the first hand after a shuffle to begin playing.
He has reviewed or acted as a consultant for blackjack writers and researchers, including Don Schlesinger and Ian Andersen.
Wong is known to have been the principal operator of a team of advantage players that targeted casino tournaments including Blackjack, Craps and Video Poker in around Las Vegas. At the beginning of the team's operation Wong was the primary financier providing the travelling expenses and buy in stakes for the other players. The current owner of the Las Vegas Advisor Anthony Curtis was among the members of this team.