The ATP Worldwide Tour dropped its prohibition of players selling space on their clothing to alcohol companies. The ATP adopted the change last month. The ATP instituted the old rule in 2004, along with prohibitions against gambling and tobacco, which remain in effect. The tour changed the alcohol rule because of requests from several Asian players, as well as the fact that several tournaments are sponsored by alcohol companies, said Kris Dent, a spokesman for the men’s tennis circuit. In practice, the move may have little effect. Most apparel endorsement contracts prohibit players selling space on their clothes to other companies. The ATP also regulates the dimensions of the ad patches. — Daniel Kaplan