(Sioux Falls, SD) -- A toddler somehow related to NFL star Adrian Peterson is reportedly in critical condition in a South Dakota hospital. TMZ reports it's his two-year-old son who was beaten by the man dating the child's mother. There are other reports indicating it's not his child. The Minnesota Vikings running back left the team yesterday to be with him, but is back at practice today. Peterson is expected to address the media. Authorities have charged 27-year-old Joseph Patterson with aggravated felony assault and battery of an infant. He's due in court today.