According to TMZ Sports, the NBA reminded Ball that he would be fined if he displayed the Big Baller Brand logo on his arm since players are prohibited from "displaying any commercial logos or corporate insignia on their body or in their hair."
To avoid a fine, Ball placed a piece of white tape over the BBB logo on his right arm.
Like Ball, Smith has opted to cover his tattoo with tape as well.
Wednesday marked Ball's preseason debut after undergoing minor knee surgery during the offseason.
In his first action as LeBron James' teammate, Ball registered seven points, four rebounds, four steals and two assists in 23 minutes off the bench.
L.A. will have another preseason meeting with the Warriors on Friday before opening the regular season against the Portland Trail Blazers on Thursday.