RFI Poker: What Raise First In Means
RFI in poker means raise first in: the action folds to you preflop and you become the first player to enter the pot by raising. It is also called an open raise, and your correct RFI range depends first on position, then on stack depth, raise size, rake, and the players behind you.
RFI poker: quick answer
- RFI applies only when everyone before you has folded.
- Open tighter in early position and wider in late position.
- If someone limps first, your raise is an isolation raise, not an RFI.
- Use one consistent size for most of your opening range rather than advertising hand strength.
- Treat charts as a baseline and adjust for stacks, rake, and opponents.
What counts as an RFI in poker?
An RFI has three requirements: the hand is still preflop, every player acting before you has folded, and you raise rather than call. Suppose you are in the cutoff in a six-handed cash game. UTG and the hijack fold, and you raise to 2.5 big blinds. That is an RFI.
Now change one detail: the hijack calls one big blind before action reaches you. Raising to 4 big blinds is no longer RFI. It is an isolation raise. If the hijack raises first and you re-raise, that is a 3-bet. These labels matter because each situation uses a different range.
| Action before you | Your raise is called | Range to study |
|---|---|---|
| Everyone folds | RFI / open raise | Opening range |
| One or more players limp | Isolation raise | ISO range |
| A player raises | 3-bet | 3-bet range vs that seat |
Why do RFI ranges change by position?
Every player left to act can wake up with a strong hand, call in position, or 3-bet. From early position, you must clear more players and will often play postflop out of position. On the button, only two opponents remain and you are guaranteed position after the flop whenever the big blind calls. That combination makes late-position opens more profitable.
The table below is a study baseline, not a universal chart. Exact solver outputs move with the game tree. A 6-max game with high rake and a 2.5bb open will not produce the same range as an ante tournament with a 2bb open.
| 6-max position | Approximate 100bb RFI | Range character |
|---|---|---|
| UTG | 15–18% | Pairs, strong aces, broadways, best suited hands |
| Hijack | 19–23% | Adds suited aces and connectors |
| Cutoff | 27–32% | More suited kings, queens, and offsuit aces |
| Button | 40–50% | Wide steal range with many playable suited hands |
| Small blind | Strategy-dependent | Raise-only or mixed raise-and-limp strategy |
For full charts and assumptions, see our 6-max preflop charts and 9-max preflop chart.
Turn RFI charts into automatic decisions
Practice opening ranges by position and stack depth, get instant feedback, and repeat the edge hands until they stick.
How should you choose an RFI raise size?
Your size changes the price opponents receive and therefore changes the hands that can profitably open. Smaller raises risk fewer chips and work well in tougher online games and shallow tournaments. Larger raises extract more value when live players call too widely, but your weakest opens become more expensive.
Online cash
2–2.5bb
A common baseline that keeps the range wide and the risk controlled.
Live cash
2.5–4bb
Often practical when the table calls small opens too freely.
Tournaments
2–2.3bb
Preserves stack utility as effective stacks become shallower.
Do not raise to 4bb with premium hands and 2bb with marginal hands. Observant opponents will read the size as a strength signal. Choose a default for the spot, use it across your range, and deviate only for a clear exploit. Our preflop raise sizing guide covers the tradeoffs in detail.
How do stack depth and antes change RFI strategy?
Deep stacks increase the value of hands that can make strong, disguised postflop holdings, especially suited connectors and small pairs in favorable positions. They also punish weak offsuit hands that make dominated one-pair holdings. At 150bb, opening a suited connector from the cutoff can be easier to realize than opening a weak offsuit king.
Short stacks reduce postflop maneuvering room. High-card strength rises, speculative implied-odds hands lose value, and some opens become raise-call or direct all-in decisions. At 12bb in a tournament, looking at a 100bb cash RFI chart is a category error; use a stack-specific tournament range or push-fold chart.
Antes add dead money before anyone acts. Winning the pot uncontested becomes more valuable, so sound tournament RFI ranges generally widen compared with an otherwise identical no-ante game. This does not mean opening any two cards: position and the reshove stacks behind still control the decision.
Three practical RFI hand examples
Example 1: AJo under the gun at 100bb
You hold A♠J♦ UTG in a six-handed online cash game and everyone is still in the hand behind you. AJo sits near the edge of many early-position strategies. Use the chart built for your rake and size rather than assuming every ace is an open. If the baseline excludes it, fold; do not limp to “see a flop.”
Example 2: 76s on the button at 100bb
Action folds to you with 7♣6♣ on the button. This is a standard RFI candidate in most 100bb strategies: only the blinds remain, you will have position when called, and the hand can make straights and flushes. If both blinds overfold, opening becomes even better. If the big blind is an aggressive 3-bettor, tighten the weakest opens and know your response before raising.
Example 3: KQo in the cutoff after a limp
UTG limps and action reaches you with K♠Q♥ in the cutoff. KQo may be a comfortable raise, but this is not an RFI spot. Use an isolation size that accounts for the limper and consider the players behind. Copying the cutoff RFI chart ignores the extra player, the larger pot, and the greater chance of going multiway.
How should you adjust RFI ranges exploitatively?
Start from a consistent GTO-informed baseline, then change the marginal hands rather than rebuilding the whole range from intuition.
- Blinds fold too often: widen cutoff, button, and small-blind opens. The weakest suited and connected hands gain most from immediate fold equity.
- Players behind 3-bet aggressively: remove weak opens that cannot continue, especially when those players have position on you. Do not respond by calling every 3-bet.
- Loose passive players sit behind: favor hands with robust value and domination potential. Marginal bluffs lose appeal when the pot often goes multiway.
- The table is short-handed: use the actual position, not the printed seat label. Five-handed UTG is strategically closer to a six-max hijack than a full-ring UTG seat.
How do you study RFI ranges efficiently?
Memorizing 169 squares independently is slow. Learn the shape of each range: all pairs above a boundary, the weakest offsuit ace, the weakest suited king, and the lowest suited connector. Then compare adjacent positions. The cutoff is not a new universe; it is the hijack range plus a recognizable outer band of hands.
Spend most practice time on boundary hands. You do not need another repetition to know that AA opens on the button. You do need repetitions for K8o, Q7s, 54s, and similar hands whose answer changes with position or stack depth. A range training routine should test decisions from memory and give immediate feedback.
Finally, separate scenarios. Train RFI first, then facing an RFI, then RFI versus a 3-bet. Mixing them before you understand the action sequence is why players apply a good chart to the wrong spot.
RFI poker FAQ
What does RFI mean in poker?
RFI means raise first in. It describes a preflop raise made after every player before you has folded, making you the first player to enter the pot voluntarily.
Is RFI the same as an open raise?
Yes. Poker players use raise first in, RFI, open raise, and open interchangeably for the first voluntary raise into an unopened pot.
Does raising after a limper count as RFI?
No. Once a player limps, the pot is no longer unopened. Raising after one or more limpers is an isolation raise, so you should use an isolation range rather than an RFI chart.
What is a good RFI percentage?
There is no single good RFI percentage because position changes the answer. A sound 100bb cash baseline may open roughly 15–18% in early position and 40–50% on the button, with exact frequencies depending on table size, rake, sizing, and opponents.
What size should an RFI raise be?
A common online cash baseline is 2–2.5 big blinds, while live games often use 2.5–4 big blinds because callers are looser. Tournament opens are often 2–2.3 big blinds, especially as stacks get shallower.
Should beginners ever open limp?
A raise-or-fold strategy is the clearest default for beginners in unopened pots. Small-blind limping can be part of advanced balanced strategies, but it requires a separate range and a plan against raises.