By Frankie Taddeo Favorites dominated in Week 1, as did the under. The opening week of USFL action proved to be a solid investment for bettors — not only for those who backed the favorites, but also those who strongly believed offenses would struggle in Week 1. Favorites went 3-1 both straight up (SU) and against the spread (ATS), while total players witnessed the under cash in three of the four games. The new USFL consists of eight teams playing a 10-week regular-season schedule. The eight clubs are separated into two divisions: the North Division and the South Division. Making up the North …