What nba players have to cover up tattoos?

"Now, more than 70 percent of NBA players have tattoos, according to In the Paint: Tattoos of the NBA and the Stories Behind Them, by Andrew Gottlieb, published in 2003. The 112-page book shows pictures of tattoos from todays hottest NBA stars, and quotes players about why they chose the images they did. Even the players representations on Video Games like NBA LIVE 2005 are tatted out."

Source: http://www.poynter.org/column.asp?id=65&aid=84986&custom=PointsSouth+2005%3A+The+online+publication+of+Poynter%5C's+Summer+Program+for+Recent+College+Graduates.+&view=print