Because there is no contact involved, the emphasis is on the receivers and defensive backs.
Freeman and Fletcher are two young players the Dolphins once counted on heavily but who are facing the prospect of severely diminished roles.
Freeman could lose his starting job to newly acquired veteran Sammy Knight, while Fletcher's playing time would all but disappear if the Dolphins go through with their plan to keep Patrick Surtain on the outside at all times.
That plan might hinge on whether they can get a contribution from Lowe, who missed most of his rookie season because of an ankle injury.
No definitive answers are going to come this week, but the picture could begin to take shape.
That's why it's important for Freeman, Fletcher and Lowe to make a good impression whenever they can.