Table: tennis_matches_2
Columns: outcome
year
championship
surface
opponent
score

Question: What was the outcome before 1997?
SQL: SELECT "outcome" FROM tennis_matches_2 WHERE "year" < 1997

Question: What championship after 1997 was the score 1–6, 4–6, 7–5, 5–7?
SQL: SELECT "championship" FROM tennis_matches_2 WHERE "year" > 1997 AND "score" = '1–6, 4–6, 7–5, 5–7'

Question: How many years was the opponent petr korda?
SQL: SELECT COUNT("year") FROM tennis_matches_2 WHERE "opponent" = 'petr korda'

Question: What was the surface in 1996?
SQL: SELECT "surface" FROM tennis_matches_2 WHERE "year" = 1996