MINNEAPOLIS (AP) — Adrian Peterson put on his Minnesota Vikings jersey for the first time in nine months on Tuesday. The star running back says he has learned a lot from the mistake he made when he struck his 4-year-old son with a wooden switch.

Peterson practiced with the Vikings on Tuesday, then told reporters he has met all the requirements that came from pleading to a misdemeanor that caused him to miss the final 15 games of last season. He says he apologized to the son he struck immediately after the incident and has a great relationship with him today.

He said: "I love all my kids with all my heart."

Vikings coach Mike Zimmer says the team is welcoming Peterson back with open arms.