CREATE TABLE table_25214321_1 (contestants INT, runner_up VARCHAR)

How many contestants were there when the runner-up was S rgio Abreu?
SELECT MAX(contestants) FROM table_25214321_1 WHERE runner_up = "Sérgio Abreu"
SELECT MAX("contestants") FROM "table_25214321_1" WHERE "Sérgio Abreu" = "runner_up"