Robert Bozenik puffed out his cheeks and looked to the heavens as he pulled a bib over his head and slumped down into his seat in the dugout.
His last touch of the game should have given Stoke the lead but he missed a brilliant chance before being replaced and Middlesbrough escaped with their unbeaten record intact.
He wasn't the only one guilty of wastefulness in an otherwise brilliant second-half performance from Stoke City.
Tomas Rigo should have scored having had time to take a touch inside the box but saw his effort saved while Sorba Thomas, Eric Bocat and Ben Wilmot all went close.