Russian athletes have been prevented from competing in many sports following their country's invasion of Ukraine. Belarus has aided Russia in the war.
Soccer, figure skating and track and field all banned Russian and Belarusian athletes and teams from their events because of the war. The Russian men's national soccer team was excluded from last month's World Cup qualifying playoffs, forcing them to miss a chance to reach this year's tournament in Qatar.
Wednesday's move signals the first time a tennis tournament has told players from Russia and Belarus they are not welcome — and the ATP was quick to criticise the All England Club for what the men's tennis tour called a "unilateral decision" and "unfair".
"Our sport is proud to operate on the fundamental principles of merit and fairness, where players compete as individuals to earn their place in tournaments," the ATP said in a statement, adding that the decision "has the potential to set a damaging precedent for the game".
The seven groups that run the sport around the world decided March 1 that players from those countries would be allowed to compete in WTA, ATP and Grand Slam tournaments but not under the name or flag of Russia or Belarus. Those two nations also were kicked out of the Billie Jean King Cup and Davis Cup team competitions; Russia had been the reigning champion in both.
The French Open, which starts on May 22, will be the first Grand Slam tournament held since Russia invaded Ukraine in February and is expected to permit Russian and Belarussian players to compete — just as so-called "neutral" athletes who may not represent their countries.
The US Tennis Association, which runs the US Open, said Wednesday it has not made a decision about whether players from Russia and Belarus can compete at the year's last Grand Slam tournament, which begins on August 29.
The All England Club said that if "circumstances change materially between now and June," it would "respond accordingly".
"We recognise that this is hard on the individuals affected, and it is with sadness that they will suffer for the actions of the leaders of the Russian regime," All England Club chairman Ian Hewitt said.
"We have very carefully considered the alternative measures that might be taken within the UK Government guidance but, given the high profile environment of The Championships, the importance of not allowing sport to be used to promote the Russian regime and our broader concerns for public and player [including family] safety, we do not believe it is viable to proceed on any other basis at The Championships."
Some current and former tennis players from Ukraine — including two-time Grand Slam semifinalist Elina Svitolina and the recently retired Sergiy Stakhovsky — put up a statement on Twitter on Wednesday that called on the WTA, ATP and International Tennis Federation to ask players representing Russia and Belarus whether they support the invasion of Ukraine.
"In times of crisis, silence means agreeing with what is happening," the posts said. "We noticed that some Russian and Belarusian players at some point vaguely mentioned the war, but never clearly stating that Russia and Belarus started it on the territory of Ukraine."