Part: Part Six - Betting After the Flop

Leading after he checks back

Turn
Heads-upPot 1,300 (6.5 BB)J♠6♣2♥4♦BBJ♦9♦● 25,000 (125 BB)YOUtop pair after he passed on the flopBTN● 25,000 (125 BB)Buttonchecked back the flopD

You called a button raise from the big blind with J♦9♦. The flop was J♠ 6♣ 2♥ and you checked - the button checked back. Turn 4♦ gives you top pair plus a flush draw.

He checked back the flop (capping his range), and you have top pair on the turn. Best?

WhyLead a probe bet. His flop check-back caps him at a weak or medium hand, so leading the turn takes the initiative, gets value from worse, and denies a free card to any draw. When the pre-flop raiser declines to c-bet, betting into him on a later street is often correct.
What happensYou bet 800; he folds.  The probe takes it.
When the pre-flop raiser checked back the flop, you read his range as capped and led the turn - a probe bet that took the initiative he surrendered.

When the pre-flop raiser checks back the flop, lead (probe) a later street - his check-back caps him, so betting into him is profitable.