question: What is the highest to par of player len mattiace, who has a t7 place and a score of 73-74=147?
answer: SELECT MAX(to_par) FROM table_name_83 WHERE place = "t7" AND score = 73 - 74 = 147 AND player = "len mattiace"
context: CREATE TABLE table_name_83 (to_par INTEGER, player VARCHAR, place VARCHAR, score VARCHAR)