Originally from New York, Cobb began playing poker there and moved to Las Vegas in 1976. To date, only one player has made more in WSOP stud events than Cobb. Cobb also finished in the money of the $10,000 no limit Texas hold"em main event in 1986 (34th), 1987 (34th), and 1990 (28th).
As of 2011, his total live tournament winnings exceed $1,550,000.
Cobb has won 4 bracelets at the World Series of Poker (WSOP), three of them in seven-card studies He won his first bracelet in the 1983 WSOP $1,000 seven card stud event Hi-Lo event, defeating David Singer during the heads-up play. Cobb won his second bracelet in 1987, defeating multi-bracelet winner Don Williams heads-up in a seven card stud event. He later won two more bracelets at the WSOP, both in seven card stud events.
