Tann was born in Singapore and moved to England to study law in the 1960s.
Tann made a final table at the $1,500 Pot Limit Omaha event of the 2000 World Series of Poker (WSOP), receiving $26,910 for his 4th-place finish behind Johnny Chan.
[2] In 2005 he won a WSOP bracelet in the $1,000 No Limit Hold'em event, to take home a prize of $188,335.
[3] In the 2007 World Series of Poker Tann cashed in the money for the first time in the $10,000 No Limit Hold'em Main Event coming in 77th place out of a field of 6,358 players, winning $106,382[4] At one time Tann was a spokesman for Betfairpoker.
Although usually called "The Dice Man", he also goes by the monikers '"The Governor" and "Mister Miyagi".