Winckowski will compete for a rotation spot this spring, Julian McWilliams of the Boston Globe reports.
Winckowski had a strong season as a reliever in 2023, but the Red Sox feel his stuff can hold up over longer outings. The right-hander is in the mix for Boston's final rotation spot along with Garrett Whitlock and Tanner Houck. Winckowski came up through the system as a starter, so pitching multiple innings is familiar.