I suspect Wada is going to end up replacing Russell. Russell has had a nice season, but Wada is the most stretched out and competent SP option if anyone goes down, so I can't see him being released. If that is the plan, then I think Russell is a DFA candidate, and it can be done for Richard to avoid the short bench situation. Given LaStella's issues on the last, he probably just gets stays on rehab until rosters expand. If he's ready before that, Herrera may get demoted for a week. LaStella will also need a 40-man spot since he's on the 60-day DL, but someone like Schlitter can be painlessly removed once the spot is needed.