Qualls was designated for assignment prior to Friday's game.

Qualls (back) was activated from the disabled list Monday, Patrick Saunders of The Denver Post reports.

Qualls (back) got through a 25-pitch bullpen session Wednesday with no issues, MLB.com reports.

Qualls was placed on the 10-day disabled list Sunday with lower back spasms, Patrick Saunders of The Denver Post reports.