Who was the runner up at the Volvo Masters Andalucia?
CREATE TABLE "table1_1615980_4" (
  "no" real,
  "date" text,
  "tournament" text,
  "winning_score" text,
  "to_par" text,
  "margin_of_victory" text,
  "runner_s_up" text
);
SELECT "runner_s_up" FROM "table1_1615980_4" WHERE "tournament"='Volvo Masters Andalucia';