Table: tennis_players
Columns: rk
name
country
matches_played
matches_won
points
prize_money_usd

Question: how many matches did the player that played 23 matches win
SQL: SELECT MIN("matches_won") FROM tennis_players WHERE "matches_played" = 23

Question: how many countries had 21 points
SQL: SELECT COUNT("country") FROM tennis_players WHERE "points" = 21

Question: how much prize money (in USD) did bob lutz win
SQL: SELECT MAX("prize_money_usd") FROM tennis_players WHERE "name" = 'Bob Lutz'

Question: how many matches did colin dibley win
SQL: SELECT "matches_won" FROM tennis_players WHERE "name" = 'Colin Dibley'