Zion Williamson has still NOT signed a shoe deal -- despite being the most sought after NBA draft pick since LeBron James -- and our sources say it's all because of Puma.
Nike was believed to be the front-runner to sign Zion for months ... with legendary former Nike exec Sonny Vaccaro telling us he thinks Zion's deal could hit the 9-figure mark.
And, with Zion rocking Nikes in college, in pre-draft workouts and in some NBA Summer league games ... it seemed like it was just a matter of time before Zion signed with the Swoosh.