Table: isner_match
Columns: outcome
date
surface
partner
opponents
score

Question: Who was the partner that played a match on a grass court?
SQL: SELECT "partner" FROM isner_match WHERE "surface" = 'grass'

Question: What was the score of the match in which mardy fish was the partner?
SQL: SELECT "score" FROM isner_match WHERE "partner" = 'mardy fish'

Question: Who were the opponents in the match that was played on a hard court and had a runner-up outcome?
SQL: SELECT "opponents" FROM isner_match WHERE "surface" = 'hard' AND "outcome" = 'runner-up'