heads-up river A-game ranges Uri Peleg analyzes a thrilling poker hand between Doug Polk and Mariano. He highlights a critical mistake on the river and discusses optimal betting strategies. Uri examines a high-stakes hand between Doug Polk and Mariano, focusing on a significant river mistake. He discusses the importance of understanding ranges and pot sizes, and how to avoid similar errors. Crucial River Mistake & Strategic Insights Big River Mistake: Mariano makes a snap-call on the river, missing a value raise. Understanding Ranges: Uri emphasizes the importance of knowing your opponent's range. Pot Size Matters: Both players struggle to navigate to the correct pot size. Uri's New Course: Uri announces his new Upswing course, focusing on core theoretical concepts. Adjusting Strategy: Uri discusses how to adjust your opening range against loose players. Disguising Hands: Mariano uses a small bet to disguise his hand's strength. Contextual Bricks: The river card is a brick in context, despite seeming innocuous.