Who was the match against when on a clay surface during round 2r?
CREATE TABLE table_name_19 (against VARCHAR, round VARCHAR, surface VARCHAR)
SELECT against FROM table_name_19 WHERE round = "2r" AND surface = "clay"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_19 (against VARCHAR, round VARCHAR, surface VARCHAR) Question: Who was the match against when on a clay surface during round 2r? [/INST] SELECT against FROM table_name_19 WHERE round = "2r" AND surface = "clay" </s>