European leaders gave debt-stricken Athens a final deadline of Sunday to reach a new bailout deal and avoid crashing out of the euro, after Greek voters rejected international creditors' plans in a weekend referendum. Greek leaders must submit detailed reform plans by Thursday to win the fresh bailout funds the country needs to stop its banking system from collapsing, EU President Donald Tusk said after an emergency summit of Greek and eurozone leaders. All 28 European Union leaders will examine the plans on Sunday in a make-or-break summit that will either save Greece's moribund economy, or leave it to crash out of the single currency -- a so-called "Grexit".
Serena Williams fired a warning to Maria Sharapova ahead of their Wimbledon semi-final clash as the world number one admitted she saves her best performances for clashes with her fiercest rival. Williams and Sharapova meet on Thursday in the latest instalment of a bitter rivalry that took root on Centre Court in 2004 and still festers more than a decade later. Sharapova caused one of the great Wimbledon shocks 11 years ago when, aged just 17, she defeated Serena in the final to claim her first Grand Slam title.