Table schema:
CREATE TABLE table_name_78 (margin_of_victory VARCHAR, runner_s__up VARCHAR, winning_score VARCHAR)

Question: what is the margin of victory when the runner-up is amy alcott and the winning score is –9 (72-68-67=207)?
SQL: SELECT margin_of_victory FROM table_name_78 WHERE runner_s__up = "amy alcott" AND winning_score = –9(72 - 68 - 67 = 207)