CREATE TABLE table_31884 ("Tournament" TEXT, "2008" TEXT, "2009" TEXT, "2010" TEXT, "2011" TEXT, "2012" TEXT)

Tell me the tournament of 2009 of atp masters series
SELECT "Tournament" FROM table_31884 WHERE "2009" = 'atp masters series'
SELECT "Tournament" FROM "table_31884" WHERE "2009" = 'atp masters series'