CREATE TABLE table_name_59 (date VARCHAR, surface VARCHAR, opponent VARCHAR)

What was the date of the match against Jean-Julien Rojer, on a clay surface?
SELECT date FROM table_name_59 WHERE surface = "clay" AND opponent = "jean-julien rojer"
SELECT "date" FROM "table_name_59" WHERE "clay" = "surface" AND "jean-julien rojer" = "opponent"