Bellatti was designated for assignment by the Rays on Friday to make room for recently acquired Oswaldo Arcia, Marc Topkin of the Tampa Bay Times reports.
The 24-year-old righty pitched fairly well for the Rays' big-league club in 2015, posting a 2.31 ERA in 23.1 innings. However, after failing to make the Opening Day roster in 2016, Bellatti has struggled to sustain that success in Triple-A, making him the odd man out on the 40-man roster with the Rays' recent trade for Oswaldo Arcia.