Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_86 (competition VARCHAR, season VARCHAR, opponent VARCHAR)
### Question:
What is the Competition for Season 2002–03, and the Opponent was zenit st. petersburg?
### Answer:
SELECT competition FROM table_name_86 WHERE season = "2002–03" AND opponent = "zenit st. petersburg"