CREATE TABLE table_46451 ("Tournament" TEXT, "1984" TEXT, "1985" TEXT, "1986" TEXT, "1987" TEXT, "1988" TEXT, "1989" TEXT, "1990" TEXT, "1991" TEXT, "1992" TEXT, "1993" TEXT, "1994" TEXT, "1995" TEXT, "1996" TEXT, "1997" TEXT, "1998" TEXT, "1999" TEXT, "2000" TEXT)

What is the 1987 value of the 1994 atp masters series?
SELECT "1987" FROM table_46451 WHERE "1994" = 'atp masters series'
SELECT "1987" FROM "table_46451" WHERE "1994" = 'atp masters series'