Rookie defensive tackle Glenn Dorsey injured his left knee during the Chiefs annual Family Fun Night practice on Saturday, according to The Kansas City Star. Dorsey was the team's first-round pick in April's draft, and figured to be the centerpiece of their rebuilding efforts. "He?s probably going to be week to week," coach Herm Edwards said. "They won?t know until they do all of the MRIs and all of that. They?ll find out what?s going on. But I don?t think it?s serious." Dorsey injured himself during a running play midway through the practice. He walked off the field without assistance.