Table schema:
CREATE TABLE table_name_69 (tries_for INTEGER, points_diff VARCHAR, points_against VARCHAR, tries_against VARCHAR)

Question: Which Tries for has Points against larger than 87, and Tries against smaller than 28, and Points diff of +63?
SQL: SELECT AVG(tries_for) FROM table_name_69 WHERE points_against > 87 AND tries_against < 28 AND points_diff = "+63"