I think people are jumping on the Wheatley wagon a little early. He's still not 100% and he has to contend with too many other possible RBs (Z, Crockett, Fargas). Still, if you have a spot because of the bye, you could probably do worse.
Here's the blurb from Statis, Inc.
Wheatley still is not fully recovered from a partially dislocated shoulder, but he continues to progress and is listed as probable on this week's injury report. After missing nearly a month, the running back returned to the Raiders' lineup for last Sunday's loss to the San Diego Chargers and rushed for 23 yards and a touchdown on four carries and hauled in four passes for 22 yards.
Thank God for Football Season.