Goodell said Friday morning during an interview with ESPN Radio's Mike & Mike that he was not aware of the social-media controversy involving Tunsil until after the Dolphins drafted the former Ole Miss offensive lineman.
As a result, Goodell did not speak to Tunsil about the issue after shaking his hand at the podium in Chicago's Auditorium Theatre.
"I think it's all part of what makes the draft so exciting," Goodell said of Tunsil's fall to Mike & Mike. "Clubs make decisions. Sometimes they take risks. Sometimes they do the right things. Sometimes they don't, and we'll see. Hopefully he is going to turn out to be a great young player."
A video that showed Tunsil wearing a gas mask and smoking a substance from a bong was posted to his verified Twitter account 13 minutes before the draft started. Tunsil said the account was hacked, and he has deleted his account.
Once projected as a possible No. 1 overall pick, Tunsil fell to the Dolphins with the 13th overall pick.
There appeared to be another hack after Tunsil was drafted. An image was posted on his Instagram account showing a text message conversation, allegedly between Ole Miss assistant athletic director John Miller and Tunsil, about paying rent and electric bills for Tunsil's mother. Tunsil's Instagram account has since been deleted.