McCullers (elbow) will throw off a mound Tuesday or Wednesday, Brian McTaggart of MLB.com reports.
McCullers hasn't pitched since sustaining a mild elbow strain Aug. 3. It's still unclear whether McCullers will be able to return during the regular season, but a return for the wild-card game or subsequent playoff series may be a possibility. We'll have to wait and see how he feels after his throwing session before we know more.