The league has flip-flopped on a rule determined by the CBA
NBA requires LaMelo Ball to cover up tattoo on neck during games - NBC Sports
NBA January-February N/V: No Grayson Allen Allowed. - The Something Awful Forums
NBA January-February N/V: No Grayson Allen Allowed. - The Something Awful Forums
The Bulls' nightmare is just beginning - by Tom Ziller
Pounding The Rock Archives - Spurs Discussion Threads - Page 1
Hornets' LaMelo Ball Told to Cover 'LF' Tattoo by NBA Because of League Policy, News, Scores, Highlights, Stats, and Rumors
Hornets: Why LaMelo Ball didn't cover banned tattoo in injury return
Charlotte Hornets Team News, Fixtures and Results
The NBA is making LaMelo Ball cover up his LF tattoo under his left ear as it violates rules against exposing commercial logos on play