The US Supreme Court has upheld a law that could allow states across the country to legalise betting on sports.
It endorsed a 2014 state law in New Jersey which permits sports betting in casinos and at horse race tracks.
A number of leading US sports bodies had opposed the move, including the National Basketball Association and Major League Baseball.
The National Collegiate Athletic Association said it was a threat to the “integrity of athletic competition”.
However, Justice Samuel Alito wrote on behalf of the Supreme Court: “The legalisation of sports gambling requires an important policy choice, but the choice is not ours to make.
“Congress can regulate sports gambling directly, but if it elects not to do so, each state is free to act on its own.”
Shares in UK-based bookmakers jumped on the ruling. Paddy Power Betfair’s share price rose 10.5%, 888 Holdings jumped 14%, William Hill’s stock gained 9.4% and GVC Holdings rallied 6%.
The Supreme Court decision strikes down a 1992 federal law that prohibited sports betting in most states.
It is only allowed in states such as Nevada, home to Las Vegas.
Source: BBC News