CREATE TABLE table_34587 ("Date" TEXT, "Tournament" TEXT, "Location" TEXT, "Winner" TEXT, "Score" TEXT, "Winner's share  (  $  ) " TEXT)

What is the winners share ($) that has u.s. open as the tournament?
SELECT "Winner's share ( $ )" FROM table_34587 WHERE "Tournament" = 'u.s. open'
SELECT "Winner's share ( $ )" FROM "table_34587" WHERE "Tournament" = 'u.s. open'