Thornton (Achilles) was activated from the 7-day injured list Friday.
Thornton got off to a slow start to the 2026 campaign after undergoing surgery in August to repair a torn left Achilles tendon, but he's been given a clean bill of health. He made his 2026 debut with Triple-A Iowa, where he gave up a pair of hits and one walk over two innings but managed to escape without surrendering a run.