Rust (lower body) was designated for injured reserve Thursday.
The Penguins haven't provided a specific timeline for Rust, but his placement on injured reserve will see him miss at least the next two games. With Ben Kindel (undisclosed) also on IR, the team called up Rutger McGroarty and Chase Pietila from the minors, while Nicholas Robertson could move into Rust's spot on the timeline with Sidney Crosby.