Part: Part Five - Betting Before the Flop

Blind versus blind

Pre-flop
Blinds 100 / 200Pot 300 (1.5 BB)SBK♠9♣● 25,000 (125 BB)YOUfolded to you, blind vs blindBB● 25,000 (125 BB)posts 200 (1 BB)D

It folds all the way to you in the small blind, heads-up against the big blind, with K♠9♣.

Blind vs blind, folded to you in the SB with K♠9♣. Best?

WhyRaise first-in. Heads-up against a single opponent, K-9 offsuit is well above average and you should apply pressure - raising takes the pot often and builds it when called. Limping invites the big blind to realize his equity cheaply in position.
What happensYou raise to 600 (3 BB); the big blind folds.  You take the blinds.
Blind vs blind, with only one opponent and a hand above the heads-up average, you raised rather than limped - pressure beats passivity when the ranges are this wide.

Blind versus blind, raise first-in with a wide range - against one opponent most hands are strong enough, and limping surrenders the initiative.