O'Day (calf/toe) was transferred from the 15-day injured list to the 60-day injured list Thursday.
O'Day has been out since mid-July with a calf injury, and he had his minor-league rehab assignment shut down earlier this week after suffering a sprained right big toe. The 37-year-old won't be eligible to return from the 60-day IL until mid-September, but it's unclear if he'll be recovered from the toe injury by that point.