Question: Which has a Score of 6–1, 3–0 Ret.?
SQL: SELECT "Surface" FROM "2-1564278-2" WHERE "Score" = '6–1, 3–0 Ret.';

Question: Which Surface is on 23 January 2011?
SQL: SELECT "Surface" FROM "2-1564278-2" WHERE "Date" = '23 January 2011';

Question: When has a Surface of Hard, a Tournament of Wrexham , Great Britain?
SQL: SELECT "Date" FROM "2-1564278-2" WHERE "Surface" = 'Hard' AND "Tournament" = 'Wrexham , Great Britain';

Question: Which Surface has an Opponent in the final of Stéphane Robert?
SQL: SELECT "Surface" FROM "2-1564278-2" WHERE "Opponent in the final" = 'Stéphane Robert';

Question: What kind of Surface has a Score of 6–4, 0–6, 6–2?
SQL: SELECT "Surface" FROM "2-1564278-2" WHERE "Score" = '6–4, 0–6, 6–2';