Nick Petrangelo

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About Nick Petrangelo

Nick Petrangelo, known online as “caecilius”, is a GTO LAB co-founder and one of the most accomplished tournament players of his generation, with over $40 million in live earnings, a WSOP bracelet, and consistent deep runs at the highest levels of both live and online poker.

At GTO LAB, Nick co-designed the postflop chip-EV and ICM trainer alongside Daniel Dvoress. He also co-created Tournament Savagery — GTO LAB’s flagship ICM masterclass covering every stage of tournament play — and the 26-Day Training Plan, a structured daily study programme designed to build professional-level tournament skills in under a month. His coaching topics include:

• Postflop play out of position (OOP) — range construction, c-betting frequencies, and how to apply pressure from out of position across different stack depths and board textures
• BvB 3-bet pots — preflop and postflop strategy in blind-vs-blind confrontations, including 3-bet sizing, defence ranges, and postflop continuation strategies
• Multiway pot strategy — 3-way and 4-way dynamics, range interaction, and aggression construction across his Multi-Way Madness series with Jonathan Jaffe
• Final table ICM — deep hand reviews from WSOP Main Event final tables covering risk premium, payout pressure, and how elite players structure their ranges under maximum ICM
• Chip-EV and ICM trainer methodology — as co-designer of GTO LAB’s training tools, Nick explains how to use the chip-EV and ICM trainer to build intuition for real tournament spots rather than memorising solver outputs
• Tournament Savagery course — Nick’s co-created masterclass covering ICM from the early stages through final table play, built around the same frameworks he uses to prepare for the world’s biggest events
• 26-Day Training Plan — a structured daily programme covering preflop, postflop, ICM, and final table play — designed to systematically close the most common tournament leaks in under a month

Nick’s coaching philosophy is built on precision and clarity: understand the framework behind each decision so you can apply it under pressure in the tournaments that matter, not just in the solver.