this hand caused our poker league to go crazy yelling
player A small blind
playerB big blind
B goes all in and A calls
A has A7 B has K4
flop is AK3
turn is 4
player B cheers and A throughs cards in
and starts to slide chips to B then river is a 7
now the trouble here is player A through away his cards and conceded
the hand
all opinions will be greatly appreciated