Zastryzny (shoulder) has been sent to Triple-A Nashville to begin a rehab assignment, Adam McCalvy of MLB.com reports.
Zastryzny hasn't pitched for the Brewers this season because of shoulder and intercostal injuries and has encountered multiple starts and stops on his rehab. He's ready to give it another go again in what will be his first game appearance in more than two months. Zastryzny could become an option for the Brewers' bullpen later this month if all goes well.