Gutterballs [2008, Canada, horror, DVDRip]

During an after-hours competition at the Xcalibur Bowling Centre, the rival teams of Steve and Jamie, two embittered former friends, engage in a fight over Lisa, a sassy girl whom Steve used to date. Before long, things take a nasty turn, as all four members of Steve's team sexually assault Lisa. However, when the sadists return to pick up where they left off, BBK, a mysterious entry on the scoreboard, and the menacing presence of a man wearing a bowling-ball leather case as a mask will turn this disco-bowling night into a match to the death. And, by morning, the bloody floors are going to be slippery.