The Milwaukee County District Attorney's office announced the decision Thursday after reviewing the "altercation" that happened early Sunday.
Sanders sat out the Bucks' 109-104 victory Wednesday night over Cleveland because of a sore thumb. The team said Sanders hurt the thumb in the previous game, a loss in the home opener last week to Toronto.
Coach Larry Drew said Thursday at practice that Sanders has told him that he should have never put himself in such a position in the first place.
"It's unfortunate that it happened but he has to learn from it and I believe that he will. At least I hope he will." Drew said.
Sanders missed practice Monday after his wife went into labor. He missed practice Tuesday because of the thumb injury.
Sanders signed a four-year, $44 million contract extension in the offseason after a breakout 2012-13 campaign. He's averaging 2.7 points and 3.7 rebounds in three games so far this season.
The Bucks host Dallas on Saturday night.