Zinno earned a degree in chemical engineering from Worcester Polytechnic Institute, then graduated from Suffolk University Law School in Boston and passed the Massachusetts state bar exam before becoming a professional poker player. In 2008, he cashed in the WSOP Main Event in 205th place, earning $38,600. His first WPT title came in September 2013, when he prevailed over a field of 1,189 and defeated Vanessa Selbst heads-up at the Borgata Poker Open, earning $825,099.[2] In 2015, he added two more WPT titles in consecutive events. First, he won the Fallsview Poker Classic, then he won the L.A. Poker Classic for $1,015,860. His victory at the LAPC was his third WPT championship, tying Gus Hansen and Carlos Mortensen for the record.[3] With these two victories and multiple cashes, Zinno was awarded the WPT Player of the Year for Season 13.[4]
At the 2015 WSOP, Zinno cashed five times and made the final table each time. He finished 7th in the $111,111 High Roller for One Drop for $565,000, then won the $25,000 High Roller Pot Limit Omaha event, earning $1,122,000 and his first career bracelet.[5][6] At the 2019 WSOP he cashed nine times and made three final tables, and won his 2nd bracelet and $279,920 in the $1,500 Pot-Limit Omaha Hi/Lo 8 or Better.[7] At the 2019 WSOP Europe he finished 3rd in the €10,350 Main Event for €485,291. At the 2021 WSOP he won his 3rd bracelet in the $10,000 Seven Card Stud Championship for $182,872 and his 4th bracelet in the $1,500 H.O.R.S.E for $160,636.[8][9] In his WSOP career, he has 111 cashes and earnings of $4,232,711.
As of October 2021, Zinno has total live tournament winnings of $10,651,602.[10]