Lin for all intents and purposes is at very least your back up PG right now. IF Davis comes back and assumes the starting role right now, there's no way you play Douglas over Lin as the backup at PG. if Lin can magically keep this production up, then Davis gotta be his backup when he comes back. if Fields is our starting SG, then you gotta play Shumpert as his back up (and vice versa).

at this point, i only see Douglas getting regular time if Davis just can not go and/or is not productive at all.