Hardest card in the deck on the river this time...

[durron597]

Well, say he had a hand like 45 or A6. Both of these hands while having a shot to win the pot when he calls the turn, very likely will not call a river bet (45 never) but they will often bet when checked to in order to take down the pot uncontested. Plus we lose chips when a flush pushes when they might make a small value bet on the river. Plus a hand like 45 may make a post-oak bluff instead of pushing to try to show strength.