Pro leagues target betting push

The four major professional sports leagues and the NCAA filed papers in court on Monday to stop New Jersey's plan to allow legal sports betting from this weekend, when gamblers could become the first in the US outside Nevada to wager on single games.

The leagues filed a motion in federal court in Trenton seeking an injunction that would stop the state from allowing casinos and racetracks to offer sports betting under legislation signed into law by Governor Chris Christie last Friday.

Monmouth Park, a horse track, is the only location that has said it is ready to accept wagers and has outfitted an area for a sports book operation.