Ah Shit spark, the positions theres a bunch.

Heres the line..

WR....TE LG LT C RT RG TE....WR

...................QB
...................RB

They put FB's in and take out a TE or WR too. In order of Left to Right you have

Wide Receiver
Tight End
Left Guard
Left Tackle
Center
Right Tackle
Right Guard
Tight End
Wide Receiver
Quarter Back
Running Back / Half Back / Tail Back.

Thats just the O.