Crabtree is garbage... I have no idea why he was ranked so high everywhere. He may develop into something good because he does have some skill but if you can't get your head on straight and know what your own route is supposed to be for a play what use are you?
IMO he's not reliable enough to start each week unless you don't have anyone else.
10 Team QB Flex 1PPR - Week 3
QB: M. Stafford, J. Flacco
RB: C. Johnson, D. Murray, D. Sproles, CJ Spiller, M. Leshoure
WR: J. Jones, E. Decker, A. Brown, P. Garcon, B. Lafell
TE: J. Finley, M. Bennett
K: D. Akers