Dunning cleared waivers Wednesday and was outrighted to Triple-A Gwinnett.
EDGE Analysis
Dunning pitched 10 innings for Atlanta after joining the organization in July, during which he surrendered 12 earned runs while striking out 11 batters and walking two. The 30-year-old will have the option to elect free agency, though his recent performance may cause him to struggle to attract more than a minor-league contract.