The stabbing happened around 6:45 p.m. in the 0-100 block of East Ohio Street, police said.
Chicago police said a 43-year old man suffered cuts to his arm and back. He was taken to Northwestern Hospital in good condition.
The stabbing happened near the entrance to Bally's, located at the former Medinah Temple, 600 N. Wabash Ave.
Police said the victim has been uncooperative. They don't have anyone in custody.
No further information was available.