Table: tennis_matches_30
Columns: outcome
date
tournament
surface
partner
opponents_in_the_final
score

Question: What surface did hayley ericksen play on?
SQL: SELECT "surface" FROM tennis_matches_30 WHERE "partner" = 'hayley ericksen'

Question: Who were the opponents on a hard surface with a score of 6-4, 7-6(2)?
SQL: SELECT "opponents_in_the_final" FROM tennis_matches_30 WHERE "surface" = 'hard' AND "score" = '6-4, 7-6(2)'

Question: What was hayley ericksen's score?
SQL: SELECT "score" FROM tennis_matches_30 WHERE "partner" = 'hayley ericksen'