Well That's Confusing
Tenner led the action on every street of a board. By the turn, Gregorich was all in for his last 13,000, creating a side pot between Coppola and Tenner that included some of the turn bets and all of the river bets.
At showdown, the hands were:
Tenner:
Coppola:
Gregorich:
Tenner's nut low and two pair, kings and fours, was good for three-quarters of the side pot. Coppola got one-quarter of that pot. As for the main pot, Tenner got half of the low and half of the high, with Gregorich and Coppola each taking a remaining quarter.
By our gorilla math, it would seem that the only person who made money on the hand was Tenner.