Diamondbacks' Merrill Kelly: Needs time to build up

Kelly (illness) rejoined the Diamondbacks on Tuesday, but he remains on the COVID-19 injured list and is expected to require a "somewhat lengthy" build-up process, Zach Buchanan of The Athletic reports.

After testing positive for the coronavirus Aug. 14, Kelly completed a 10-day quarantine and is no longer exhibiting symptoms. However, because of the layoff, Kelly will likely need to complete multiple bullpen sessions and/or simulated games before the Diamondbacks feel comfortable activating him. Unless the Diamondbacks indicate otherwise, don't expect Kelly to rejoin the big-league rotation until next week at the soonest.