LAS VEGAS (AP) — The slot machines were turned off and the sportsbooks were dark inside the glittering casinos that line the Las Vegas Strip. On what would have been the biggest Monday of the year for bookies, not a dollar changed hands. No big national championship game bets, no wagers on Tiger Woods to win the Masters. No sports means no action, even for the most hardcore gamblers. About the only thing degenerate sports bettors could do was go online and find a Russian table tennis match to put their money on.