This is certainly not a #1 tip, in fact I don't even know what would qualify as a #1 tip, but here's an interesting trend I picked up from RJ from one of the First Preview shows in early 2012 season.
Teams that play their home opener in week #3 and are favorites, are 0-11-1 ATS since 2004. (now 0-13-1)
Last year Dallas and Washington both fell into this category and Dallas, who was favored by 9 pts beat Tampa Bay 16-10 but failed to cover, and Washington was favored by 3 against Cinci and lost outright 38-31 - which confirmed the trend for one more year. (RJ is not just another pretty face!)
This year, Miami, Tenn, and Minnesota play their home openers in week #3. Will they be favorites? Here are the match ups and the early lines posted at Cantor in May. Obviously the lines will change so mark your calendars.
Miami +1 is home to Atlanta
Tennessee +2.5 is home to San Diego
Minnesota -6.5 is home to Cleveland
I don't have a copy of the current lines so if anyone can post a link to updated early lines, I would appreciate it.