The third-seeded Serbian Novak Djokovic has reached the semi-finals of the ATP Masters 1000 hardcourt tennis tournament in Florida with a 6-3 6-4 victory over France's Jo-Wilfried Tsonga.
Djokovic now faces the second-seeded Roger Federer in the semi-finals after the Swiss beat the fifth-seeded American Andy Roddick in their quarter-final.
In the women's tournament the world number one Serena Williams will meet her sister Venus in the semi-finals after coming from a set down to beat China's Li Na 4-6 7-6 6-2.
Venus Williams beat the Czech Republic's Iveta Benesova 6-1 6-4 to ensure that at least one of the sisters will be in the final at Key Biscayne.