Fast is believed to have a separated shoulder and is out indefinitely, Larry Brooks of the New York Post reports.

EDGE Analysis

Fast got plastered into the glass by Alex Ovechkin in Tuesday's game, which seems to have caused the injury. While no timeline has been released yet, 6-to-8 weeks is a normal recovery time for a separated shoulder, which means there's a chance that Fast doesn't return to the Rangers' lineup until the playoffs. The team will miss his bottom-six speed boost, but fantasy owners have gotten very limited use out of Fast this year.