CREATE TABLE table_name_66 (opposition VARCHAR(255), score VARCHAR(255), round VARCHAR(255), competition VARCHAR(255))
What is the Opposition in the First Round of the UEFA Cup with a Score of 3–1 (h), 2–0 (a)?
    
SQL: SELECT opposition FROM table_name_66 WHERE round = "first round" AND competition = "uefa cup" AND score = "3–1 (h), 2–0 (a)"