INF Gustavo Nunez has been returned to the Tigers.
Diamondbacks claimed INF Gustavo Nunez off waivers from the Pirates.
Gustavo Nunez (ankle) began a rehab assignment with the Pirates' Gulf Coast League team Monday.
Pirates placed SS Gustavo Nunez on the 60-day disabled list with a right ankle injury.
Pirates selected SS Gustavo Nunez from the Tigers in the Rule 5 draft.