Overview

• The Mariners placed reliever Trent Thornton on the 15-day injured list after confirming a torn left Achilles sustained when he exited the mound on a ninth-inning grounder Thursday.
• Thornton’s injury was initially feared to involve his Achilles and was diagnosed following an MRI, raising the prospect of a year-long recovery.
• Right-hander Jackson Kowar was recalled from Triple-A Tacoma in a corresponding roster move aimed at shoring up Seattle’s bullpen.
• Thornton’s setback arrived hours after the trade deadline, testing a relief corps that lacked major additions in recent transactions.
• Manager Dan Wilson praised Thornton’s performance before the injury and signaled confidence in internal options to preserve late-inning stability.