Dunn (shoulder) was activated from the 60-day injured list and optioned to Triple-A Louisville on Sunday.
Dunn opened the season on the 60-day injured list with a right shoulder strain that also plagued him in 2021 with the Mariners, but he's now healthy and will remain in the minors after a six-start rehab assignment. The right-hander made five starts for Louisville during the rehab stint and will remain there after posting a 5.50 ERA, 1.56 WHIP and 17:9 K:BB across 18 innings.