Finding Greg Oden's name trending on Twitter on October 21 isn't what the NBA had in mind just one day before Zion Williamson's expected regular-season debut against the defending champions.

But that's where the NBA finds itself after the New Orleans Pelicans revealed the No. 1 overall pick underwent surgery to remove debris from a torn meniscus.

"The term 'debridement' suggests Williamson was able to undergo a meniscectomy in which the damaged tissue was removed," Jeff Stotts of InStreetClothes.com told me.

Pelicans officials identified the injury with a timetable of six to eight weeks of unavoidable recovery time, putting Zion's return sometime between the opening week of December and Christmas.