CREATE TABLE table_48013 ("Outcome" CLOB, "Date" CLOB, "Tournament" CLOB, "Surface" CLOB, "Opponent" CLOB, "Score" CLOB)

Who did Thomaz Bellucci play against when he became runner-up on a clay surface?
SELECT "Opponent" FROM table_48013 WHERE "Outcome" = 'runner-up' AND "Surface" = 'clay'
SELECT "Opponent" FROM "table_48013" WHERE "Outcome" = 'runner-up' AND "Surface" = 'clay'