Three and out: Christopher Dabe’s takeaways from Week 4 of the prep football season.

1. SATURDAY SHOWDOWN: Don’t be surprised if Holy Cross puts up some points next week against John Curtis when the two undefeated teams play Saturday at Tad Gormley Stadium. The Tigers have plenty of firepower on offense, which will be needed to keep pace with a Curtis team that has topped 40 points in all three games. Holy Cross has won against De La Salle and Rummel this season. Curtis will be the stiffest challenge yet. 2. STRONG STARTS: It doesn’t take much imagination to picture Newman and St. Charles with undefeated records for their Week 10 game in LaPlace.…