Sandler in like no other role since "Punch Drunk Love" but more violent and vile. He nails his character and the ending comes out of nowhere.
If you like sports and gambling then you will appreciate this as long as non-stop f-bombs don't offend you. Fourth most of any mainstream movie according to an on-line reference.
Most of the other actors as unrecognizable but fit their roles nicely and are believable including Kevin Garnett of the Boston Celtics fame. Kevin's got more than a cameo roles and has several lines. whiplaying himself in2012