Action folded to Jason Koon in the cutoff and he opened for 225, which the big blind called. Both players then checked the flop as well as the turn. When the completed the board on the river, the big blind led out for a mere 225 and Koon thought for a long time.
"In case you have ace-four or something," Koon explained before dropping in a call. The big blind then rolled over the for a pair of sevens. Koon mucked.