I remember there was another former nba player that lost a lot from gambling but I couldn't find the thread.

Michael Jordan. Considered to be the best player of all time, Michael Jordan is very competitive inside the court and outside it. Like another player, Charles Barkley, Jordan likes to show his competitiveness while playing at casinos, generally in Atlantic City. But his real passion is competing with his friends and other sports stars on the golf course for high bets and shooting. His most significant loss was $1,000,000.

Being an impressive personality, Barkley shocked his fans in 2006 when he told about his losses of 10 million dollars at casinos. One year later, he managed to win back almost $700 thousand when he supported the Colts to win Super Bowl XLI. Barkley was taken to court by the Las Vegas’s Wynn Casino for failing to pay around $400,000. Despite such situations, he doesn’t seem to slow down. He is still regularly seen in various casinos in Vegas, spending huge amounts of money.