Bạn đã biết VPIP và PFR — hai stat preflop cơ bản. Nhưng AF (Aggression Factor) là stat đo lường aggression post-flop, cung cấp picture hoàn chỉnh hơn về style của một player. Player có AF cao là aggressive bettor/raiser; AF thấp = passive caller.
AF Là Gì?
AF (Aggression Factor) đo lường tỷ lệ giữa aggressive actions (bet + raise) so với passive actions (calls) post-flop.
Công thức:
AF = (Số lần bet + Số lần raise) / Số lần call
Ví dụ: Player bet 30 lần, raise 10 lần, call 20 lần: AF = (30 + 10) / 20 = 2.0
Diễn Giải AF
| AF | Phân Loại | Ý Nghĩa |
|---|---|---|
| < 1.0 | Passive/Calling Station | Calls nhiều hơn bet/raise |
| 1.0–2.0 | Slightly Passive | Borderline |
| 2.0–3.5 | Balanced Aggressive | Standard winning range |
| 3.5–5.0 | Aggressive | Bets/raises more than average |
| > 5.0 | Very Aggressive/Maniac | May be too aggressive |
AF vs. AFq (Aggression Frequency)
Lưu ý: Có hai related metrics:
AF (Aggression Factor): Ratio của bets+raises vs. calls.
AFq (Aggression Frequency): Phần trăm streets mà player bet hoặc raise.
AFq = (Bet + Raise) / (Bet + Raise + Call + Check) × 100%
AFq thường range từ 30–55% cho balanced players.
Khi nào dùng cái nào?
- AF: Ratio-based, can be misleading with small sample sizes (if someone never calls, AF = infinite)
- AFq: Cleaner percentage, more reliable
Aggregate vs. Street-Specific AF
Tổng AF là một số, nhưng breakdown theo street cho thêm information:
AFf (Aggression Factor Flop) AFt (Aggression Factor Turn) AFr (Aggression Factor River)
Pattern Reading
AFf cao, AFt thấp: C-bet nhiều nhưng give up trên turn → double-barrel opportunist
AFr cao hơn AFt: Became more aggressive on river = might be value-heavy or bluff-heavy on river (need more info)
Consistent high AF all streets: Truly aggressive player, double and triple barrels often
High AFt, Low AFr: Fires turn but backs off river → bluff gives up on river (exploit: call turn, fold river... actually: call turn, sometimes check river)
Exploit Dựa Trên AF
Low AF Player (< 1.5): Passive/Station
Profile:
- Calls more than bets
- Rarely bluffs
- "Show me the nuts" mentality
Exploit:
- Never bluff them — they call too much
- Value bet thin (even bottom pair can be profitable)
- Bet all three streets with any decent hand
- Don't slow play — they'll call anyway
High AF Player (> 4.0): Aggressive/LAG
Profile:
- Bets and raises frequently
- Many bluffs in range
- Puts pressure on opponents
Exploit:
- Call down wider (their range has many bluffs)
- Check-raise more (they'll bet → you raise)
- Don't try to outbluff them → let them bluff into you
- Position is key: IP against high AF = cash machine
AF Và 3-bet/4-bet Situations
AF stat là post-flop only — preflop aggression captured by PFR and 3-bet%.
Tuy nhiên, combined reading:
High PFR + High AF: Aggressive preflop AND post-flop = very aggressive overall
Low PFR + High AF: Tight preflop but aggressive post-flop = plays strong hands aggressively
High PFR + Low AF: Opens wide but passive post-flop = easy to steal from, easy to bluff off on flop
AF Interpretation With Sample Size
AF needs enough hands to be reliable:
< 50 hands: Very unreliable. One all-in hand skews everything.
50–200 hands: Directional read, use loosely.
200+ hands: Starting to be reliable.
500+ hands: Solid read.
Don't make major exploitative adjustments with < 100 hands of AF data.
Tự Kiểm Tra AF Của Mình
Ideal AF Range (6-max Cash)
Target: 2.5–4.0 overall
Breakdown target:
- AFf: 3.0–4.5 (aggressive on flop)
- AFt: 2.5–4.0 (aggressive on turn)
- AFr: 2.0–3.5 (slightly less aggressive on river — natural)
Nếu AF Quá Thấp (< 1.5)
Symptoms:
- Calling down too much without equity
- Not c-betting enough
- Giving up pots you should contest
Fix:
- C-bet more on appropriate boards
- Double-barrel with semi-bluffs
- Stop calling without plan
Nếu AF Quá Cao (> 6.0)
Symptoms:
- Bluffing too much
- Betting without plan
- Opponents calling you down profitably
Fix:
- Check back medium hands for pot control
- Stop triple-barrel bluffing without equity
- Balance bets with value-to-bluff ratio
AF In Combination With Other Stats
AF alone doesn't tell you everything. Combine with:
VPIP/PFR + AF:
- VPIP 25%, PFR 20%, AF 4.0 = tight-aggressive with post-flop aggression — beware
- VPIP 45%, PFR 10%, AF 1.2 = loose-passive fish — value bet relentlessly
WSD% (Went to Showdown) + AF:
- Low AF + High WSD: Calling station — calls down to showdown
- High AF + Low WSD: Aggressive but folds to pressure — float them
WWSF (Won When Saw Flop) + AF:
- High WWSF + High AF: Wins most flops they play — skilled aggressive player
Kết Luận
AF bổ sung cho VPIP/PFR để tạo ra complete picture của một player. Dùng AF để:
- Identify passive players → value bet them, never bluff
- Identify aggressive players → call down, use position
- Calibrate own AF → too low or too high = leaks
Kết hợp AF với street-specific breakdown cho deep insight vào where players are aggressive và where họ give up — và khai thác accordingly.