Question: How many new points were earned by rk 26?
SQL: SELECT "New points" FROM "1-27615896-18" WHERE "Rk" = 26.0;

Question: How many points were won where new points was 1680?
SQL: SELECT MIN("Points won") FROM "1-27615896-18" WHERE "New points" = 1680.0;

Question: What are the maximum points defended when points won are smaller than 720.0?
SQL: SELECT MAX("Points defending") FROM "1-27615896-18" WHERE "Points won" < 720.0;

Question: What are the total points for sd 15?
SQL: SELECT MAX("Points") FROM "1-27615896-18" WHERE "Sd" = 15.0;

Question: What is the total number of sd listings where the status is Quarterfinals lost to Novak Djokovic [1]?
SQL: SELECT COUNT("Sd") FROM "1-27615896-18" WHERE "Status" = 'Quarterfinals lost to Novak Djokovic [1]';