Question: which opponents in the U.S. Championships played after 1945 and had a score of 3–6, 6–4, 2–6, 6–3, 20–18?
SQL: SELECT "Opponents in the final" FROM "2-1639306-2" WHERE "Championship" = 'U.S. Championships' AND "Year" > 1945.0 AND "Score" = '3–6, 6–4, 2–6, 6–3, 20–18';

Question: what is the most recent year Gardnar Mulloy played as a partner and score was 12–10, 8–10, 12–10, 6–2?
SQL: SELECT MAX("Year") FROM "2-1639306-2" WHERE "Partner" = 'Gardnar Mulloy' AND "Score" = '12–10, 8–10, 12–10, 6–2';