Yacabonis was optioned to Triple-A Norfolk on Friday, MASN's Roch Kubatko reports.
He was sent down after another rough outing Thursday in which his lack of control was on full display, as he walked three batters while recording just one out. Yacabonis was also shelled by the Yankees in his debut over the weekend, allowing four earned runs in one inning. He does possess an electric fastball that sits in the mid-to-upper 90s, but until Yacabonis can hone his control, he's destined to stay down at Triple-A.