Why You Must Isolate in Poker

You raise to 3.5 big blinds. Someone calls. Someone else calls. Now you're playing a four-way pot with a hand that was probably best preflop.

Congratulations. You just bought a lottery ticket.

Here's what happened. You had a 40% skill edge — that's a lot, by the way — heads-up you're a 70-30 favorite. That's real edge. Add two more players and you're a 68% dog. After rake, you're closer to 27% equity. That's marginally better than flipping a coin four ways.

Multiway pots are lottery tickets. You didn't come to a casino to buy lottery tickets.

In business, same mistake. The instinct to include everyone, to make sure all stakeholders feel heard, to be a team player — that's calling multiway. You expand the table because it feels collaborative, and you mistake a large group for a strong one. Dilution is not strength. In poker and in business, you want heads-up. You want to play against one person's mistakes, not dilute your edge across a table of strangers.

When you isolate with a raise, you're not bullying. You're choosing situations where your edge shows up. The lottery ticket players are subsidizing your evening. Thank them.

If you’re playing that isolating raise at Rivers, by the way, you’re also standing in the cluster of smokers at the 20-foot line. Philadelphia’s indoor casino ban is real, but the outdoor smoking patio is right there — see the loophole the code carves out at the door. And the only reason I ever played enough to write any of this is that Philadelphia is the rare city where a guy in an As hat, a bank executive in a $1,000 sweater, and a sleep-deprived new dad can sit down at the same 1/2 table — see why I love this city.