Winckowski will be recalled from Triple-A Worcester to start Wednesday's game against the A's, Jen McCaffrey of The Athletic reports.
The Red Sox have openings in their starting rotation with Nathan Eovaldi (back) and Garrett Whitlock (hip) on the injured list, and Winckowski will be called up Wednesday for his second start of the season. The 23-year-old made his MLB debut in late May and allowed four runs on six hits with four strikeouts and three walks across three innings. He has a 3.38 ERA, 0.97 WHIP and 43:8 K:BB over 42.2 innings for Worcester this year and could receive a longer look in Boston's rotation this time around.