Injury woes continue to dog the Stars, as leading scorer Brad Richards will miss Tuesday's game against Edmonton — and possibly more — after getting hurt in a mid-ice collision Sunday against Columbus. In addition, defenseman Nicklas Grossman is listed as doubtful for the next two games with a hip flexor injury he suffered Sunday, bringing the Stars' injured list to seven players. The Stars are not officially listing Richards as having a concussion, but coach Marc Crawford said his star center was "shook up" after a hit on the final shift of a 2-1 loss to the Blue Jackets. While Richards spoke with reporters, as usual, after the game and told the Stars he wanted to be on this week's road trip, Crawford said Richards did not feel 100 percent Monday morning and did not make the trip. He probably will work out Tuesday morning to determine whether he can join the team for games Wednesday at Calgary or Saturday at Vancouver. " We think it is the best measure for him to stay behind and get him back to 100 percent before he rejoins the club," Crawford said. "We're going to be cautious here and do not only what is best for Brad Richards but also for the Dallas Stars." Richards has not missed a game this season , and he missed two last season. He ranks sixth in the NHL in scoring with 63 points (24 goals, 39 assists) in 56 games and leads the Stars in most offensive categories. He plays 21:47 a game (including 5:26 per game on the power play) and has taken 215 shots on goal. The next closest Stars player (James Neal) has 153 shots on goal. Richards also has taken 775 faceoffs (second on the team to Mike Ribeiro) and has won 51.4 percent of his draws.