Ross has good speed at the WR position from what I've seen. Now, other aspects of his game is what we need to find out, if he will be a contributor or not. The WR position has potential. Fall will tell us a lot here. Fingers crossed.
Waiting to see Ross turn his speed into plays, Lee has some speed as well but again hasn't turned it into plays. Fields is the only guy we have who has so far shown that he can make a move and run by a DB using his speed to get open. Of course Spruce gets open even without having great speed but it would be a huge help if we could have a couple guys stretch the field more than we do.
Don't think we will get that from lil' Mac but he sure looked like a guy who can take a few quick steps to end up giving the QB an open target who will catch the ball.