Table schema:
CREATE TABLE table_name_71 (runner_up VARCHAR, rank VARCHAR, last_win VARCHAR, wins VARCHAR)

Question: Which Runner-up has a Last win smaller than 1998, and Wins of 1, and a Rank larger than 13?
SQL: SELECT COUNT(runner_up) FROM table_name_71 WHERE last_win < 1998 AND wins = 1 AND rank > 13