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_79 (pos INTEGER, league VARCHAR, postseason VARCHAR)
### Question:
What is the average position for tb2l teams promoted champion?
### Answer:
SELECT AVG(pos) FROM table_name_79 WHERE league = "tb2l" AND postseason = "promoted champion"