Table:
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: If the RR rate is less than 0.75 with a score of RR:08.09, what is the average for WTA Tour Championships?