Table: thomas_bellucci_matches
Columns: outcome
date
tournament
surface
opponent
score

Question: Who did Thomaz Bellucci play against when he became runner-up on a clay surface?
SQL: SELECT "opponent" FROM thomas_bellucci_matches WHERE "outcome" = 'runner-up' AND "surface" = 'clay'

Question: What tournament did Thomaz Bellucci become runner-up on a clay surface?
SQL: SELECT "tournament" FROM thomas_bellucci_matches WHERE "outcome" = 'runner-up' AND "surface" = 'clay'

Question: What type of surface did Thomaz Bellucci play against tommy robredo?
SQL: SELECT "surface" FROM thomas_bellucci_matches WHERE "opponent" = 'tommy robredo'