CREATE TABLE table_name_69 (tries_for INTEGER, points_diff VARCHAR(255), points_against VARCHAR(255), tries_against VARCHAR(255))
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"