CREATE TABLE table_name_45 (partner VARCHAR(255), score VARCHAR(255), surface VARCHAR(255), outcome VARCHAR(255))
Which Partner with the surface of Clay ended up as a runner-up with a score of 1–6, 6–4, [10–12]?
    
SQL: SELECT partner FROM table_name_45 WHERE surface = "clay" AND outcome = "runner-up" AND score = "1–6, 6–4, [10–12]"