CREATE TABLE table_21114902_1 (knockouts_of_the_night VARCHAR, fighter VARCHAR)

How many knockout of the night occurred when joe lauzon fought.
SELECT knockouts_of_the_night FROM table_21114902_1 WHERE fighter = "Joe Lauzon"
SELECT "knockouts_of_the_night" FROM "table_21114902_1" WHERE "Joe Lauzon" = "fighter"