CREATE TABLE table_name_20 (date_of_birth__age_ VARCHAR2, position VARCHAR2, caps VARCHAR2)

When was the lock with 10 caps born?
SELECT date_of_birth__age_ FROM table_name_20 WHERE position = "lock" AND caps = 10
SELECT "date_of_birth__age_" FROM "table_name_20" WHERE "caps" = 10 AND "lock" = "position"