CREATE TABLE table_14439 ("Player" CLOB, "Position" CLOB, "Round" CLOB, "Overall" FLOAT, "MLB Team" CLOB)

What position was less than 421 overall played by Matt Clark?
SELECT "Position" FROM table_14439 WHERE "Overall" < '421' AND "Player" = 'matt clark'
SELECT "Position" FROM "table_14439" WHERE "Overall" < '421' AND "Player" = 'matt clark'