SELECT surface FROM table_name_66 WHERE outcome = "runner-up" AND partner = "ivan lendl" AND score_in_the_final = "2–6, 6–7"
Di permukaan mana Ivan Lendl menjadi mitra dengan hasil runner-up dan skor akhir 2-6, 6-7?
CREATE TABLE table_name_66 (surface VARCHAR, score_in_the_final VARCHAR, outcome VARCHAR, partner VARCHAR)