Table: tennis_stats_9
Columns: outcome
year
tournament
surface
partner
opponents
score

Question: When did the earliest tournament happened?
SQL: SELECT MIN("year") FROM tennis_stats_9

Question: Who was Petrova's partner where she scored 6–2, 3–6, 6–7 (7-9)?
SQL: SELECT "partner" FROM tennis_stats_9 WHERE "score" = '6–2, 3–6, 6–7 (7-9)'

Question: Who were Petrova's opponents with Vania King?
SQL: SELECT "opponents" FROM tennis_stats_9 WHERE "partner" = 'Vania King'