Cooper Flagg out for home opener with mild left shoulder sprain

Marc Stein reported the official MRI results and timeline.
Marc Stein reports that forward underwent an MRI that revealed a mild left shoulder sprain.
Flagg is out for tonight's home opener and will be re-evaluated next week. He sustained the injury during the first half of the Mavericks' recent game against the .
The Mavericks host the tonight. Flagg's absence removes him from the forward rotation for the matchup.