Singapore, October 29 Angelique Kerber continued her relentless march towards a maiden WTA Finals crown with a comprehensive 6-2, 6-1 victory over defending champion Agnieszka Radwanska today to set up a title showdown against Dominika Cibulkova. The German enjoyed a breakthrough campaign with victories at the Australian and US Opens to usurp Serena Williams at the top of the world rankings and after another dominant display, she will be favoured to cap her season with the Singapore title on Sunday. Both players are renowned for their exemplary defence and supreme athleticism but, with serving not considered their strongest suit, it was hardly surprising to see the contest start with three straight breaks in favour of the German. Kerber gave her Polish opponent no free points, got everything back and forced Radwanska into playing an extra shot on every rally, the constant pressure leading to another break in the seventh game, enough for the German to claim the opener. In the first semi-final, Cibulkova continued her dream debut at the elite eight-woman event with a thrilling 1-6, 7-6(2), 6-4 victory over Russian Svetlana Kuznetsova.