The Marlins do not know when Henderson Alvarez will be able to throw again. He was shut down Thursday from his throwing program due to shoulder discomfort.

Alvarez has been sidelined since the beginning of the season due to right shoulder inflammation, but was facing live batters in simulated games in recent days. Alvarez was shut down prior to making his next step, which would have been a minor-league rehab assignment beginning Thursday. Marlins manager Mike Redmond did not have a timeline for Alvarez to begin throwing again, but he also did not sound too concerned about the injury.

"He's going to be down," Redmond told MLB.com. "He's taking a break."

At the very least, Alvarez will need additional time to build his arm strength up, so a timeline for his return from the disabled list will have to wait until he can begin throwing again.