Jordan Bohannon -- the University of Iowa's all-time 3-point shot-maker -- was sucker punched in a bar Sunday morning in a brutal attack captured on video.
Now, school officials say the 23-year-old is "recovering well" after suffering a "serious head injury" during the incident ... and police are now involved.
The video shows Bohannon hanging outside at DC's Sports Bar bar in Iowa City when suddenly he was blindsided with a brutal shot to the face.
You can see Bohannon sprawled out on the ground in the aftermath of the attack and his friends and other patrons try to figure out what the hell happened.