Table: tennis_matches_13
Columns: date
tournament
surface
opponent_in_the_final
score

Question: Name the surface for 12 september 2006
SQL: SELECT "surface" FROM tennis_matches_13 WHERE "date" = '12 september 2006'

Question: Name the score for opponent in the final being paul baccanello
SQL: SELECT "score" FROM tennis_matches_13 WHERE "opponent_in_the_final" = 'paul baccanello'

Question: Name the surface for 20 march 2007
SQL: SELECT "surface" FROM tennis_matches_13 WHERE "date" = '20 march 2007'

Question: Name the date for opponent in the final being ignasi villacampa
SQL: SELECT "date" FROM tennis_matches_13 WHERE "opponent_in_the_final" = 'ignasi villacampa'

Question: Name the tournament for grass surface and opponent in the final being paul baccanello
SQL: SELECT "tournament" FROM tennis_matches_13 WHERE "surface" = 'grass' AND "opponent_in_the_final" = 'paul baccanello'