Table:
text: WTA Tour Championships
Singles
Singles
Player Result_ Appeared RR_W_L RR_W_Rate
Victoria Azarenka F:11 SF:12 RR:09,10,13 5 07–08 0.47
Marion Bartoli RR:07,11(A) 2 02–01 0.67
Jennifer Capriati SF:03 1 02–01 0.67
Anna Chakvetadze SF:07 1 02-01 0.67
Kim Clijsters W:03,10 SF:06 RR:05 4 08–04 0.67
Lindsay Davenport SF:05 RR:04 2 04-02 0.67
Elena Dementieva SF:08 RR:03-06,09,10 7 05–16 0.24
Sara Errani RR:12,13 2 02-04 0.33
Daniela Hantuchová RR:07 1 01–02 0.33
Justine Henin W:06,07 SF:03 3 07-02 0.78
Martina Hingis RR:06 1 01–02 0.33
Ana Ivanovic SF:07 RR:08 2 02-03 0.4
Jelena Janković SF:08,09,13 RR:07,10 5 05-10 0.33
Angelique Kerber RR:12,13 2 01-05 0.17
Svetlana Kuznetsova RR:04,06-09 5 03–12 0.2

text: WTA Tour Championships
Singles
Singles
Player Result_ Appeared RR_W_L RR_W_Rate
Petra Kvitová W:11 SF: 13 RR:12 3 05-02 0.71
Li Na F:13 RR:11,12 3 05-04 0.56
Amélie Mauresmo W:05 F:03,06 SF:04 4 09-03 0.75
Anastasia Myskina SF:04 RR:03 2 03–03 0.5
Nadia Petrova RR:05,06,08(A) 3 02-05 0.29
Mary Pierce F:05 1 03–00 1
Agnieszka Radwańska SF:12 RR:08(A),09(A),11,13 5 05-06 0.45
Chanda Rubin RR:03 1 01–02 0.33
Dinara Safina RR:08,09 2 00–04 0
Francesca Schiavone RR:10 1 01–02 0.33
Patty Schnyder RR:05 1 01-02 0.33
Maria Sharapova W:04 F:07,12 SF:05,06 RR:11 6 13-04 0.76
Samantha Stosur SF:10,11 RR:12(A) 3 04-04 0.5
Ai Sugiyama RR:03 1 01-02 0.33
Serena Williams W:09,12,13 F:04 RR:07,08 6 12-03 0.80

Question: What did Angelique Kerber, who had an RR rate less than 0.33, appear for the WTA Tour Championships?