San Francisco 49ers WR Kyle Williams is the pre-training-camp favorite for the ‘X’ wide receiver spot, ahead of A.J. Jenkins, who holds the slot advantage, and others.

Our View: The ‘X’ receiver is the split end who lines up on the line of scrimmage furthest away from the tight end. On the line Williams can be jammed by the cornerback at the snap. He’ll have to prove he can consistently beat the jam with quickness and speed to get into his route. We’ll see Anquan Boldin as the ‘Z’ receiver (flanker) lined up a yard or two off the line on the opposite side of the field.
49ers | Kyle Williams early favorite for X spot