The Rockies selected Mushinski from Triple-A Albuquerque on Tuesday.
Mushinski re-signed with the Rockies on a minor-league contract in March after being released a few days before. He has notched a 3.38 ERA with a 1.19 WHIP and a 46:17 K:BB through 48.0 innings at Triple-A during 2026. The lefty has not made an appearance in MLB since 2024, when he had a 6.55 ERA and a 1.45 WHIP across 11 innings.