CREATE TABLE table_57281 ("Last" TEXT, "First" TEXT, "Year" FLOAT, "Sport" TEXT, "Country" TEXT)

Name the last for softball before 2000
SELECT "Last" FROM table_57281 WHERE "Year" < '2000' AND "Sport" = 'softball'
SELECT "Last" FROM "table_57281" WHERE "Sport" = 'softball' AND "Year" < '2000'