Table schema:
CREATE TABLE table_name_51 (opponent VARCHAR, score VARCHAR, tournament VARCHAR, surface VARCHAR, outcome VARCHAR)

Question: Which opponent has a Surface of clay, an Outcome of winner, a Tournament of bogotá, and a Score of 6–0, 6–4?
SQL: SELECT opponent FROM table_name_51 WHERE surface = "clay" AND outcome = "winner" AND tournament = "bogotá" AND score = "6–0, 6–4"