Sony Ericsson today announced extension of its deal with world number one tennis player, Caroline Wozniacki as global brand ambassador. The Danish tennis star, Caroline Wozniacki will support Sony Ericsson for its Xperia™ smartphone portfolio. The deal has been signed to extend partnership with Sony Ericsson till 2013. The exclusive off-court agreement expands the Wozniacki sponsorship from Danish-only to a worldwide contract. The endorsement renewal and extension will build on Sony Ericsson’s long-term sponsorship of Wozniacki which began in 2007.