WTA Finals Singapore: Petra Kvitova vs. Angelique Kerber

Kerber pulls off an upset! She beats the higher seeded Kvitova after a second set tie-break.

Kvitova's on her 2nd serve as the pair are level 4-4 in the second set. Could this go to a tiebreaker too?

Game point! Kerber had hoped to equalise, but it's now at deuce again.

The game goes to Kerber, who narrows Kvitova's lead to 4-3 in the second set.

Game point for Petra Kvitova! She commits her 5th double fault, however, and it's back to deuce.

#WTAFinals Singlish Word of the Day! “Popz” That means: “Popular”
— WTA (@WTA) October 26, 2015

Every match at this tournament is neck and neck, as early as the first rounds. Kvitova's up 3-2 against Kerber in the second set, but it's still anybody's game .. set .. and match.

2 games to love to Petra Kvitova, who's taken the lead in the second set!

A fast moving game sees Kerber storm to take the first set 6-2 in just over half an hour! It's game point for Petra Kvitova in the first game of the second set.

The lower-ranked Kerber is up 4 games to 2 in the first set and has hit two aces so far.

Kerber hits her second ace, and is up 3-1 against Kvitova in the first set!

Kvitova's off with a bang! She hits her first ace and is up 30-15 in the first game of the match.