W/R/T: Battle/Torain/Gaffney?

[Tyler Maxwell]

I've got a few bye's this week and am having trouble choosing my flex option. Right now I have Battle in, because he seems like he will be consistent for a while as the top back in KC, and has a favorable matchup at SD, which is also on Monday night, which is a plus. I am liking Torain with the loss of Hightower, but then again you still never know with Shanahan. Gaffney seems to have a lot of upside this week and he is available on the waiver wire. Who should I play here? I picked up Pierre Thomas to fill in this week with the loss of McGahee (hopefully he will only be out one week!), and Steven Jackson in my other RB starter. Do you think he will be a strong play against the soft StL, or will Sproles steal the show? Thanks!