ALLEN PARK, Mich. (AP) - Louis Delmas messed up an assignment in practice Monday morning. The Lions safety didn't mind a bit, as long as he was able to stay on the field. Delmas got a rare opportunity to get some work in as he continues to recover from a knee injury, and he was enjoying every minute. "I made a mistake, because I was so excited to be out there," he said. "I went up to the coach and told him that I had screwed up, because I was just excited to be on the field." Delmas isn't new at this game, having dealt with knee injuries for years, but the frustration of not having practiced since Aug. 8 was starting to wear on him.