RFI in Poker or Open-Raise: How Much Should You Bet Pre-Flop?

Most poker mistakes are made before the flop. A player may have a strong grasp of hand strength, understand pot odds, and feel confident post-flop*, yet still bleed chips consistently due to poor starting hand selection. This is particularly common when initiating the betting action.

*Post-flop — all betting rounds that occur after the flop (flop, turn, and river).

Some players enter the pot too tightly* and miss out on profitable situations. Others, conversely, open far too many hands from early positions and constantly find themselves in unprofitable spots. Over the long run, these leaks cost a significant amount of money — even if the rest of their strategy is solid.

*Tight — a style of play where a player plays a very narrow and strong range of starting hands.

To evaluate their pre-flop play and understand opponent ranges, professionals rely on statistical indicators. One of the most critical among these is RFI. This metric shows how often a player opens the action with a raise and what ranges they use from various positions.

In this article, we will break down what RFI is in poker, how it differs from other statistical metrics, what values are considered optimal for different positions, how to exploit this information when analysing opponents, and how to construct your strategy around opening ranges.

What is RFI in Poker

RFI stands for Raise First In. This term describes a scenario where a player is the first to show aggression pre-flop, opening the action with a raise.

If all players before you fold and you make a raise, this action is recorded as an RFI. However, if anyone has already entered the pot, your subsequent raise is no longer considered an RFI: this action is called a 3-bet. 

We covered 3-bets in greater detail in this article, do go and take a look. 

The formula is as follows:

RFI = number of open-raises / number of open-raising opportunities × 100%

It is vital to understand that limping does not count towards this metric. If a player merely completes the big blind, their RFI statistic will not increase. The metric only tracks aggressive entry into the pot via a raise.

At first glance, it might seem that RFI is virtually identical to PFR. However, this is not the case.

How RFI Differs from PFR

PFR (Pre-Flop Raise) is a statistical metric reflecting the overall percentage of times a player raises pre-flop, showing their total pre-flop raising frequency.

It includes:

• open-raises

• re-raises

• isolation raises against limpers

• squeezes*

*Squeeze — a tactical play involving an aggressive pre-flop raise after one player has raised and one or more opponents have called.

We discussed squeezes in detail in this article. 

RFI only counts opening raises.

Imagine two players with the same PFR of 20%. The first opens many pots themselves, while the second rarely open-raises but actively 3-bets other players' opens. Their overall PFR might be identical, but their playing styles are completely different.

This is precisely why experienced players utilize RFI to define their opponents' starting ranges with high precision.

How to Track RFI

Tracking such statistics manually is virtually impossible. This is where specialized poker trackers and HUD software come in.

The most popular solutions are:

• Holdem Manager 3

• Hand2Note

• PokerTracker

While you play, these software choices gather data on all opponent actions and display the statistics in a specialized HUD. 

Generally, RFI is not displayed for each position directly in the main HUD panel. It is far more convenient to open the expanded statistics (pop-up) and check the breakdown by position. 

Every player can design their HUD to show the values they need, so our layout recommendations are just starting points. Feel free to experiment. 

For example, a player might have an overall open rate of 22%, but their positional open rates look like this:

• 13% of hands from early position

• 18% from middle position

• 30% from the cutoff

• 48% from the button

This information is far more valuable than a single averaged figure.

Sample Size — When Can You Trust RFI?

One of the most common errors made by beginner players is drawing conclusions from too small a sample size.

If an opponent opens from the button four times out of eight possible opportunities, it does not mean their RFI is 50%.

To obtain reliable data, you should target the following minimums:

• button — at least 200 opportunities

• early position — from 300 opportunities

• overall RFI — at least 500 hands

• for precise analysis, a sample of 2,000 hands or more is optimal

It is especially critical to look at positional stats. Average values often mask major strategic differences.

For example, a solid regular and a novice may both have an overall RFI of around 18%, but the regular will correctly widen their ranges in late positions, while the novice will open almost identically from any seat at the table.

Optimal RFI Values

Range width depends directly on your position.

The more players left to act after us, the more cautious we must be with our starting hand selection. As we move closer to the button, the number of opponents behind us decreases, allowing our ranges to widen significantly.

For 9-max tables—assuming we are in the early stages of a tournament—the following values serve as solid benchmarks:

The gap between early and late position ranges looks massive, but it is entirely justified. From the button, a player gains a positional advantage on virtually all post-flop streets. This allows them to profitably open a wide range of hands that would be chip-spewing from early positions. This is why the button opening range is typically three times wider than the UTG range.

Let's look at how this percentage breakdown translates visually. 

Opening from EP

Opening from EP+1

Opening from MP

Opening from HJ

Opening from CO

Opening from BU

To fully understand how to use poker charts, read our article on this topic. 

RFI Values in Tournaments

In tournament poker, opening ranges shift constantly alongside stack depth and payout structures.

1. Early Stage

During the early blind levels, players typically have deep stacks and do not yet feel the tournament pressure of ICM*.

*ICM (Independent Chip Model) — a mathematical model used in poker tournaments to calculate the monetary value of a player's chip stack.

In these conditions, opening ranges are at their widest compared to the middle and late stages, where tournament life and ICM factors dictate tighter, more calculated plays.

2. Middle Stage

In the middle stage, fighting for uncontested pots becomes significantly more lucrative. However, there are elements you must adapt to: the effective stack size, position, the approaching bubble, and the status of your opponents. Generally, the middle stage requires exploiting opponent weaknesses while ensuring you do not allow others to exploit yours. Thus, ranges can either expand or contract depending on the context of the hand. 

3. Late Stage and the Final Table Bubble

During the middle stage, most decisions were based on chip accumulation (cEV). If an action gained chips in the long run, it was correct.

In the late stage, this approach no longer suffices. Now, it is not just about the size of your stack, but its monetary value within the payout structure. This is where the Independent Chip Model (ICM) takes center stage.

The core principle of ICM is that chip value is non-linear. Every chip won is worth less than the chips you stand to lose, making stack preservation highly critical.

Consequently, strategy adjusts. Moves that were profitable in the middle stage can become massive mistakes on the bubble* or near the final table. For example, calling an all-in with a marginal equity edge is often a disaster if losing means elimination.

Bubble — the stage of a tournament when only a few players need to be eliminated before the remaining field reaches the prize money. 

At the same time, the value of applying pressure skyrockets. Many players begin to over-fold, attempting to survive the payout jumps. This allows medium and big stacks to relentlessly steal pots pre-flop, capitalising on their opponents' survival-first approach.

Optimal Open-Raise Sizing

RFI dictates how often we open. But understanding the correct sizing is equally crucial.

An open-raise sizing of 2 BB has become the tournament standard. This sizing allows you to:

• risk fewer chips

• maintain a wide opening range

• respond more effectively to opponent 3-bets

How to Read an Opponent's RFI

An RFI statistic on its own does not make a player good or bad. However, it quickly reveals their general playing style.

1. RFI Below 10%

If a player opens fewer than 10% of hands across virtually all positions, you are dealing with an incredibly tight opponent.

Against these players, you can:

• steal their blinds aggressively

• fold marginal hands to their opens

• exercise high caution in large pots

When such an opponent shows aggression, their range is heavily weighted toward premium hands.

2. RFI 22–27%

These percentage values represent the baseline for most solid, regular players. 

They employ well-balanced ranges and rarely make fundamental mistakes pre-flop.

3. RFI Above 30%

Players opening more than a third of their hands from early positions warrant special attention.

Their ranges will be saturated with weak and marginal combinations.

Against these opponents, you should:

• call with plan to exploit their wide post-flop ranges

• 3-bet their opens more frequently

• fight aggressively for pots on later streets

The Importance of Positional Gap: Strong players understand the power of position. Thus, a solid regular's gap between their button RFI and early position RFI will easily exceed 30%.

If a player opens with similar frequencies from all positions, it is a massive indicator of a flawed strategy. These opponents are prime targets for exploitation*. 

*Exploit — a deliberate deviation from a balanced strategy (GTO — Game Theory Optimal) to maximize profit by targeting the specific weaknesses of an opponent.

We analyzed highly profitable exploit strategies in this article; click through to read if you want to elevate your game. 

4. RFI Above 40%

If a player opens over 40% of hands, especially over a large sample size, this goes beyond a loose style. These statistics are typically the hallmark of