Spotted early on Day 1 was Barry Greenstein. Greenstein, the owner of three WSOP bracelets, is also well-known in the poker community for his book titled "Ace on the River," which he's famously given free copies of to players that have eliminated him from tournaments.
Greenstein is known as "The Robin Hood of Poker" due to him using the net proceeds from his tournament winnings and donating to various charities.