Table: tennis_match_results_21
Columns: outcome
date
tournament
surface
opponent
score

Question: What is the outcome of the match with opponent Jade Curtis?
SQL: SELECT "outcome" FROM tennis_match_results_21 WHERE "opponent" = 'jade curtis'

Question: What is the outcome of the match played on carpet surface?
SQL: SELECT "outcome" FROM tennis_match_results_21 WHERE "surface" = 'carpet'

Question: What is the name of the Tournament with Jade Curtis as the opponent?
SQL: SELECT "tournament" FROM tennis_match_results_21 WHERE "opponent" = 'jade curtis'