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

What is the surface of the tournament with a runner-up outcome and dudi sela as the opponent?
SELECT surface FROM table_name_59 WHERE outcome = "runner-up" AND opponent = "dudi sela"
SELECT "surface" FROM "table_name_59" WHERE "dudi sela" = "opponent" AND "outcome" = "runner-up"