Singer is a former environmental lawyer who worked on issues and lawsuits related to cleaning up the Long Island Sound for a non-profit organization.

Singer has been playing poker professionally since 1996, concentrating on seven-card stud before moving to mostly Texas hold 'em tournaments.

He is the only person to make the final table of the three largest buy-in No-Limit Hold'em events in a single year at the World Series of Poker, which he did in 2003.

It featured two world champions, Doyle Brunson and Jim Bechtel, as well as multi-bracelet winners Dewey Tomko, T. J. Cloutier, Phil Ivey, and Chip Reese.

[4] After being away from the majority of the 2007 WSOP for personal reasons,[5] he became the first player to make back-to-back final tables in the $50,000 HORSE event, again finishing sixth.