The win by Nevada casinos ticked up 3.3 percent to $892.7 million in September compared with the same month in 2011, due mainly to bad bets by sports bettors as the NFL football season started.State Gaming Control Board Analyst Mike Lawton said the overall increase stems from a record increase in sports bet winnings, up 165.4 percent to $53.4 million, with a 12.7 percent "hold" - the amount of money gambled that a casino retains - compared with a 5.8 percent hold in 2011.Lawton said that's a record haul for a month's worth of sports betting and for football which …