CREATE TABLE table_name_7 (opponent VARCHAR(255), competition VARCHAR(255), score VARCHAR(255))
At the VFL Reserves, who was the opponent when the score was 18.6 (114) - 21.14 (140)?
    
SQL: SELECT opponent FROM table_name_7 WHERE competition = "vfl reserves" AND score = "18.6 (114) - 21.14 (140)"