Dodgers manager Dave Roberts said Wednesday that it's "very unlikely" Stone (shoulder) will return from the 15-day injured list this season, Jack Harris of the Los Angeles Times reports.

Stone had been scheduled to begin a throwing program this past weekend, but that didn't happen, as he's yet to pick up a ball due to continued soreness in his right shoulder. The right-hander has missed all of September with shoulder inflammation. Stone's continued absence is yet another blow to a Dodgers rotation that's been decimated by injuries.