They'll get the extra arm tomorrow, presumably Wesneski. That means even with Brewer and Thompson down you have 4 guys you can count on for 1 inning(Alzolay, Leiter, Neris, Almonte), and three more you could get 2 or even 3 from(Smyly, Brown, Wesneski), and everyone has 3 days rest except for Smyly who has 2. That's 10 pen innings for a Shota and Assad start, plus they could potentially double dip or use Thompson in a more dire situation. Given they can't bring back any of the other reasonable options, I'm guessing Brewer is safe for now.