The loose-aggressive (LAG) opponent wins through volume and fold equity. They enter the pot with 40 percent of hands, raise frequently, and apply pressure. The naive response is to tighten up and wait for premium hands, then lose when they steal your blinds. The correct response is more sophisticated.
The LAG's Implied Edge
A LAG generates edge through three channels: they fold too much when facing serious aggression; they overvalue weak holdings like small pairs; and they accumulate small pots through positional theft. The typical LAG will have a positive win rate against weak players but a negative win rate against anyone playing sound fundamentals.
Counter-Strategy One: Tighten Your Hole Cards
Play hands with strong equity, not hands with potential. A LAG will often have a weak hand when they raise, so postflop equities matter more than usual. Hands like AK, QQ, pocket pairs, and strong Broadway combinations are good. Hands like K9o or J9s are weak because when you hit top pair, you are uncertain if you are ahead, and the LAG will put pressure on you immediately.
Your range tightens, but your hands play better against aggression. That is the trade.
Counter-Strategy Two: Raise More Pre-Flop
If you play only premium hands, you can afford to raise them. This accomplishes two things: you define your hand strength and you take the initiative. The LAG has folded on you before; they will again. But now you have value when you do get called.
A specific guideline: if you are playing 15 to 20 percent of hands and playing only hands that can profitably raise, your win rate against a LAG increases measurably. You are no longer playing for small edges; you are playing for big value.
Counter-Strategy Three: Call Less, Raise More
This is the trap. Against a LAG, you want to avoid marginal calls. Marginal calls lose money because you are uncertain postflop and the LAG will punish your uncertainty. Raising, on the other hand, forces the LAG to make immediate decisions. LAGs hate this. They are built for aggression against weak opponents, not for defense against aggression.
Post-Flop Adjustments
When you hit top pair or better, bet for value. The LAG will call wider than a tight player, so your value range is broader. When you have a draw, you can often fold because you are no longer chasing to beat missed hands; you are chasing to beat holdings that the LAG will play aggressively. That is a tougher fold.
If the LAG is in position and you are out of position, tighten further. Position matters more against aggressive players because you have to call blind.
The Kelly-Staking Layer
Against LAGs, your variance increases. You will run below expectation more often because you are investing in high-variance hands. Account for this when sizing your bankroll. If you are playing a LAG in a heads-up match, your expected hourly rate might be $40 per hour but with standard deviation of $200 per hour. You need at least 50 buy-ins to weather the swings. Do not underfund the game just because you think you can beat the opponent.
The Actual Numbers
A sound player against a typical LAG can expect to earn 15 to 30 bb/100 hands, depending on stack depths and how aggressive the LAG actually is. If the LAG is merely strong but not excellent, the edge is closer to 5 to 10 bb/100. If the LAG is also skilled, the edge drops to 0 to 5 bb/100. The advantage comes from exploiting specific leaks, and if the LAG has few leaks, there is no edge to exploit.
The point is this: you do not beat a LAG by waiting for better cards. You beat them by playing fundamentally sound poker and letting their aggression run into your value. Tighten, raise, bet for value, and let time and sample size do the work.
