CREATE TABLE table_74488 ("Player" TEXT, "W-L  ( Total ) " TEXT, "W-L  ( Singles ) " TEXT, "W-L  ( Doubles ) " TEXT, "Ties" FLOAT, "Debut" FLOAT, "Years Played" FLOAT)

Tell me the WL doubles with a debut of 1999
SELECT "W-L (Doubles)" FROM table_74488 WHERE "Debut" = '1999'
SELECT "W-L (Doubles)" FROM "table_74488" WHERE "Debut" = '1999'