CREATE TABLE table_61769 ("Outcome" TEXT, "Date" FLOAT, "Championship" TEXT, "Surface" TEXT, "Opponent" TEXT, "Score" TEXT)

What is the earliest date when the championship was Monterrey WCT, Mexico?
SELECT MIN("Date") FROM table_61769 WHERE "Championship" = 'monterrey wct, mexico'
SELECT MIN("Date") FROM "table_61769" WHERE "Championship" = 'monterrey wct, mexico'