What is the round when the match was against sergis kyratzis?
CREATE TABLE table_name_21 (round VARCHAR, opponent VARCHAR)
SELECT round FROM table_name_21 WHERE opponent = "sergis kyratzis"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_21 (round VARCHAR, opponent VARCHAR) Question: What is the round when the match was against sergis kyratzis? [/INST] SELECT round FROM table_name_21 WHERE opponent = "sergis kyratzis" </s>