Penguins star Sidney Crosby left the team's preseason loss to the Blue Jackets on Thursday night with a groin injury. Pittsburgh said that the injury isn't believed to be serious. "It's better to stay off it. I'm hoping for just a few days," Crosby told the Associated Press. "I've hurt my groin before. It's not as bad. I think I missed five games with one last year. It's just something you have to be careful with."