Jelena Jankovic defeated Ana Ivanovic 6-3, 6-4 Tuesday in round-robin play at the WTA's season-ending Sony Ericsson Championships. Jankovic won with the composure and consistency that have ensured she will end the year as the top-ranked player. Her Serbian compatriot alternated between spectacular winners and a far greater number of errors, drilling a backhand into the net on match point. More...