They'd have to make a huge leap and the Ravens take a huge step backward. With the addition of zay flowers I think the ravens are set. Even if OBJ is washed (I'm not convinced he is) they've got a wicked receiving core. I think Vegas knows what they're doing -10 is a solid indication Ravens are the one this week.
But also. Week 1s are never a gimme. Always madness. Things don't tend to settle til like week 3