ST. JOSEPH, Mo. -- Kansas City Chiefs safety Dan Sorensen tore the lateral meniscus and suffered damage to the MCL in his left knee during a special teams drill at training camp this week. Sorensen also fractured his tibia.
Sorensen had surgery at the University of Kansas Hospital and was to return on Saturday to camp at the Missouri Western State University to begin his rehab.
Sorensen will miss at least the start of the regular season.
"There is no timeframe other than we're going to examine Danny at six weeks," Chiefs athletic trainer Rick Burkholder said.