The Pirates designated Suwinski for assignment Monday, Robert Murray of FanSided.com reports.
Suwinski ended up being the casualty after the Pirates needed to free up a 40-man roster spot for the signing of Marcell Ozuna. After showing promise in his first two big-league seasons with 45 home runs over 250 games, Suwinski managed a weak .169/.271/.297 batting line and 29.9 percent strikeout rate over the subsequent two seasons. The 27-year-old doesn't have minor-league options remaining, but he's shown enough upside that he could draw interest via waivers.