CREATE TABLE table_1615980_4 (runner_s__up VARCHAR2, tournament VARCHAR2)

Who was the runner up at the Volvo Masters Andalucia?
SELECT runner_s__up FROM table_1615980_4 WHERE tournament = "Volvo Masters Andalucia"
SELECT "runner_s__up" FROM "table_1615980_4" WHERE "Volvo Masters Andalucia" = "tournament"