Finnegan (groin) is expected to be reinstated from the 15-day injured list Friday, Cody Stavenhagen of The Athletic reports.
Finnegan said he is "ready to go" for Friday's contest. The 34-year-old right-hander has been on the shelf since the start of September due to a right adductor strain. He'll likely compete with Will Vest for saves during the closing days of the regular season.