Penguins' Rust diagnosed with concussion

The Pittsburgh Penguins will be without Bryan Rust for the immediate future as the forward has been diagnosed with a concussion, head coach Mike Sullivan announced Friday.

Rust left Wednesday's game against the Philadelphia Flyers after being boarded by Robert Hagg in the first period. While he had gone five games without a point, he's already topped his career high in points with 33 in 57 games.

Sullivan also noted that forward Dominik Simon - who was forced from Wednesday's game against the Flyers as well - is week to week with a lower-body injury.