Winckowski allowed five runs on six hits while striking out six over six-plus innings for Triple-A Worcester on Sunday.
Winckowski dealt through the first six innings before the first four batters reached base in the seventh. All four came around to score, giving the appearance of a poor outing for the right-hander. His next start could come as a member of the Red Sox, who have a doubleheader scheduled for Saturday, which would be the right-hander's next day to pitch. Boston manager Alex Cora hinted that one of the starters for the doubleheader would come from the minors, and Winckowski lines up as a logical choice.