Saugus, CA — JJ Bittner accounted for five touchdowns Thursday night as the Rio Mesa High football team opened its season with win for the first time in four years.   The junior quarterback completed 19 of 28 passes for 174 yards and three TDs and also ran for 68 yards and two scores as the Spartans routed host Saugus High, 48-6.  We played pretty well,” Rio Mesa head coach Jim Bittner said. “We had to overcome a bunch of first-game mistakes, but the kids played hard the whole game. They played with pretty good character.”  Senior J’Lin Wingo rushed for 100 yards on six carries, including a 46-yard TD run. He also caught a 10-yard TD pass. Senior Tayvion Duplessis returned an interception for a touchdown in the fourth quarter.  Rio Mesa (1-0) wraps up its nonleague schedule next Friday at rival Camarillo.