Montario Hardesty, Cleveland's promising rookie runningback, practiced Thursday for the first time since injuring his right knee during a pre-training camp workout. Hardesty sustained a bone bruise to his knee during a 1-on-1 tackling drill before Cleveland's veterans reported to camp. Hardesty said he hurt his leg while making a cut. Browns coach Eric Mangini said Hardesty, who has had a history of knee problems, will be limited in practice as the team prepares for Saturday's third preseason game in Detroit. Mangini said Hardesty is questionable against the Lions "with the arrow pointed down."