I think it means that no one has shown enough to Riley that says they are 'the guy' just yet. Given this was spring practice #9 with a new system, this is to be expected.
Maybe this is just a smart head coach being smart. If you come out of spring with everybody believing they are in it then they will all work harder over the summer.
Tommy is injured, but going forward he wants more people to get reps with the 1s. I think that's a clear sign he is at least opening the job up to others after what he saw from them today.