Jonathan Jaffe

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About

Jonathan Jaffe, known online as “Iftarii”, is a GTO LAB co-founder, podcast host, and one of the most versatile tournament professionals in the world, with over $16 million in live earnings, two Triton Super High Roller titles, and a WPT Alpha8 win worth over $1.5 million.

At GTO LAB, Jonathan is the lead voice on multiway pot strategy — one of the most complex and undercoached areas of tournament poker. His coaching covers the full tournament game, from deepstack live spots to ICM bubble pressure.

What Jonathan teaches at GTO LAB

• Multiway pot strategy — 4-way dynamics, sandwich spots, polarized aggression, and how range advantage shifts in multi-opponent pots
• Bluffing frameworks — when to triple-barrel, how to build credible river bluffs, and how to use missed flush draws as +EV bluffing opportunities
• Population exploits — reading sizing tells, identifying when opponents give up the lead, and exploiting predictable tendencies in tough live fields
• Deepstack live poker — hand history reviews from Triton and the 2025 WSOP Main Event, covering pacing, discipline, and early-level deepstack adjustments
• ICM under pressure — river decisions and bluff evaluation on the bubble, balancing chip EV aggression with ICM survival
• Hand history review — his Grading Discord series gives direct, honest feedback on the most common leaks in tournament players’ games

Jonathan also hosts the GTO LAB Podcast, bringing in top professionals to discuss strategy, study methods, and mental performance.

His coaching philosophy is direct and structured — less about copying solver outputs, more about building the decision models that hold up under real tournament pressure.