user: Question: Who were the opponents in the match that was played on a Hard court and had a Runner-up outcome?
Columns: ['Outcome', 'Date', 'Surface', 'Partner', 'Opponents', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Winner', 'July 7, 2008', 'Grass', 'Mardy Fish', 'Rohan Bopanna Aisam-ul-Haq Qureshi', '6–4, 7–6 (7–1)']
SQL:

assistant: SELECT "Opponents" FROM "Table" WHERE "Surface" = 'Hard' AND "Outcome" = 'Runner-up';