That is a lot of uncertainty. It is also a target-rich environment for opponents. The Eagles have provided obvious points of attack on both sides of the ball, and you can be sure opposing coaches will test them all. Rams head coach Steve Spagnuolo will try to confuse rookie center Jason Kelce and his unfamiliar linemates with exotic fronts and unexpected blitzes. His offensive coordinator, Josh McDaniels, will try to use the Eagles' aggressiveness against them with screens and draws and quick throws that put pressure on the middle of the defense.