CREATE TABLE table_name_51 (runner_s__up VARCHAR2, margin_of_victory VARCHAR2, tournament VARCHAR2)

What is Runner(s)-Up, when Margin of Victory is 1 Stroke, and when Tournament is Joburg Open 1?
SELECT runner_s__up FROM table_name_51 WHERE margin_of_victory = "1 stroke" AND tournament = "joburg open 1"
SELECT "runner_s__up" FROM "table_name_51" WHERE "1 stroke" = "margin_of_victory" AND "joburg open 1" = "tournament"