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"
### Context: CREATE TABLE table_name_21 (round VARCHAR, opponent VARCHAR) ### Question: What is the round when the match was against sergis kyratzis? ### Answer: SELECT round FROM table_name_21 WHERE opponent = "sergis kyratzis"