Table: alex_bogdanovic_tennis_matches
Columns: date
tournament
surface
opponent_in_the_final
score

Question: Which has a Score of 6–1, 3–0 ret.?
SQL: SELECT "surface" FROM alex_bogdanovic_tennis_matches WHERE "score" = '6–1, 3–0 ret.'

Question: Which Surface is on 23 january 2011?
SQL: SELECT "surface" FROM alex_bogdanovic_tennis_matches WHERE "date" = '23 january 2011'

Question: When has a Surface of hard, a Tournament of wrexham , great britain?
SQL: SELECT "date" FROM alex_bogdanovic_tennis_matches WHERE "surface" = 'hard' AND "tournament" = 'wrexham , great britain'

Question: Which Surface has an Opponent in the final of stéphane robert?
SQL: SELECT "surface" FROM alex_bogdanovic_tennis_matches 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 alex_bogdanovic_tennis_matches WHERE "score" = '6–4, 0–6, 6–2'