Preflop RFI Ranges: The Complete Opening Guide
Master your opening ranges for every position at the table. Learn which hands to open, how position affects your range, and common preflop mistakes to avoid.
What is RFI?
RFI stands for Raise First In — it's the first voluntary raise in a hand when no one has entered the pot before you. Your RFI range is arguably the most important decision in poker because it sets the foundation for everything that follows.
Why Position Matters
The later your position, the wider you can open:
| Position | Approximate Open % | Example Hands |
|---|---|---|
| UTG | ~15% | AA-77, AKo-ATo, KQo, AKs-A9s, KQs-KTs |
| HJ | ~18% | Add 66, A9o, KJo, QJs, JTs |
| CO | ~25% | Add 55-22, A8o-A5o, KTo, QJo, T9s |
| BTN | ~40% | Add A4o-A2o, K9o-K5o, Q9o, J9o, suited connectors |
| SB | ~35% | Slightly tighter than BTN (out of position postflop) |
The 3 Most Common RFI Mistakes
1. Opening Too Loose from Early Position
Playing hands like KJo or QTs from UTG is a significant leak. You'll be out of position against 5+ players with a marginal hand.
2. Not Opening Wide Enough from the Button
Many players leave money on the table by not stealing enough from the BTN. You should be opening 40%+ of hands.
3. Inconsistent Raise Sizing
Pick a standard open size (2.5-3x BB) and stick with it. Varying your sizing based on hand strength is a major tell.
How to Practice RFI
Use DEEPFOLD's RFI Training module to drill your preflop opening ranges. The trainer tests you position by position and gives instant feedback when you deviate from GTO.
🎯 Drill your opens → Start RFI Training
📖 Related reading: Understand why position is the most powerful advantage in poker, and avoid the most common preflop mistakes that cost you money. The natural next step after RFI: what is a 3-bet? and the full 3-bet strategy guide.