Part: Part Five - Betting Before the Flop

Don't let the aces get cracked

Pre-flop
Blinds 100 / 200Pot 900 (4.5 BB)MPAA 25,000 (125 BB)YOUto actUTG 25,000 (125 BB)LimperlimpsSB 25,000 (125 BB)posts 100 (0.5 BB)BB 25,000 (125 BB)posts 200 (1 BB)D

A player limps from under the gun and it's on you in middle position with A♠A♦.

A limper is in and you hold pocket aces in middle position. Best?

WhyLimp behind and you invite a family pot - the exact condition where aces get outdrawn and cracked. A healthy raise, sized up because there's a limper to punish, thins the field so you play your monster heads-up or three-handed with the lead and a pot already building.
What happensYou make it 1,000 (5 BB) over the limper; one player calls and the rest fold. Pot: 2,500 (12.5 BB). First job done - the field is narrowed so your aces aren't fighting the whole table.
Flop
Heads-upPot 2,500 (12.5 BB)K84MPAA 25,000 (125 BB)YOUan overpairUTG 25,000 (125 BB)CallerchecksD

Flop K♥ 8♣ 4♦ - your aces are an overpair on a dry board. He checks.

Overpair, dry board, he checks. Best?

WhyK-8-4 rainbow is dry, and your aces are still the overpair - a king, a smaller pair, or a stray draw will all pay. Slow-play here and you just hand out the free card that undoes the pair you raised to protect.
What happensYou bet 1,500 and he folds. You protected the pair and collected - not the stack you might dream of, but exactly the disciplined line that keeps aces from getting cracked.
You raised aces over a limper to cut the field instead of drifting into a multiway minefield, then bet for value rather than trapping. Aces make money heads-up in a building pot, not five-way in a limped one.

Big pairs want fewer opponents and a growing pot - raise to thin the field and build value; limping along invites the multiway pots where aces get cracked.