The Orioles placed Bassitt on the 15-day injured list Monday due to low back discomfort.
Bassitt was lifted early from his last start Wednesday in Boston due to a tight back, but after briefly returning to Baltimore to get examined, he rejoined the Orioles over the weekend for their road series in Toronto. Though the righty appeared to be trending toward taking the hill for his next turn in the rotation Monday versus the Mariners, the Orioles instead have opted to place him on the IL to give him more time to move past the back issue. Trey Gibson was called up from Triple-A Norfolk and will draw the start Monday in place of Bassitt, who will be eligible to return from the IL beginning June 20. Per Matt Weyrich of The Baltimore Sun, manager Craig Albernaz said Bassitt is still "looking at his options" for a treatment plan for the injury and is scheduled to receive a second opinion later this week.