CREATE TABLE table_name_71 (jersey__number NUMBER, name VARCHAR2, weight__kg_ VARCHAR2)

What was the average Jersey # of Steve Griffith, when his Weight (kg) was less than 84?
SELECT AVG(jersey__number) FROM table_name_71 WHERE name = "steve griffith" AND weight__kg_ < 84
SELECT AVG("jersey__number") FROM "table_name_71" WHERE "name" = "steve griffith" AND "weight__kg_" < 84