17. RIHANNA - S&M: 59.312 (+ 1.564)
Rihanna still has a chance at #1. It'll just have to be a creeper week, like WMN or OG.
On the Floor may be #1 on iTunes, but it's airplay is still awful. S&M is 50 points ahead of it. Meanwhile, Gaga is about 50 points ahead of S&M, so as long as S&M keeps stable until BTW decreases, it could sneak in a week at #1.
Plus, I'm all for Def Jam being shady again and discounting S&M in 2-3 weeks.
