SINGAPORE - World No. 1 Angelique Kerber recorded her second win of the BNP Paribas WTA Finals Singapore presented by SC Global at the Singapore Indoor Stadium on Tuesday (Oct 25).

The German's 6-4, 6-2 victory over fourth-ranked Simona Halep brought her one step closer to progressing into the semi-finals.

Kerber has never moved past the round-robin stage in her previous three appearances (2012, 2013 and 2015) at the season-ending US$7 million (S$9.75 million) tournament.

Addressing the crowd after the match, Kerber said: "I'm feeling very good here; it's always great to be on this centre court and in Singapore.

"I'm very happy to win my second match here. Every match is tough but I just tried to focus on my game and enjoy every game. Thank you guys and I hope you enjoyed (the match) as well."

The 28-year-old has won both her matches and tops the Red Group. She will face American Madison Keys on Thursday. Keys defeated fellow debutante Dominika Cibulkova 6-1, 6-4 in the second match on Tuesday evening.

The second day of White Group matches on Wednesday (Oct 26) will see Czech Republic's Karolina Pliskova take on Russia's Svetlana Kuznetsova.

Defending champion Agnieszka Radwanska takes on world No. 6 Garbine Muguruza in the later match.