CREATE TABLE table_6738 ("Date" FLOAT, "Tournament" TEXT, "Surface" TEXT, "Partner" TEXT, "Opponent in the final" TEXT, "Score in the final" TEXT)

Which Tournament has a Partner of karel nov ek?
SELECT "Tournament" FROM table_6738 WHERE "Partner" = 'karel nováček'
SELECT "Tournament" FROM "table_6738" WHERE "Partner" = 'karel nováček'