Richards, who has been out with concussion-like symptoms, did not participate in the morning skate. Stars officials said Richards is still feeling symptoms after practicing with the team Thursday in the Phoenix area.
This will be the eighth game missed for both players, who were injured Feb. 13 against the Columbus Blue Jackets. Grossman has been sidelined with a hip injury.
Both players joined the Stars on their current road trip Wednesday and practiced with the team Thursday. It was the first practice for both players since their injuries.
Mark Stepneski covers the Stars for ESPNDallas.com.