CREATE TABLE table_name_95 (round VARCHAR, opponent VARCHAR, result VARCHAR)

For what round was the opponent mercedes paz with a result of 4 6, 6 1, 6 3?
SELECT round FROM table_name_95 WHERE opponent = "mercedes paz" AND result = "4–6, 6–1, 6–3"
SELECT "round" FROM "table_name_95" WHERE "4–6, 6–1, 6–3" = "result" AND "mercedes paz" = "opponent"