I've finished this, but I don't understand some of the parsing.  Please can anyone explain the following?
16a: Two big beasts clash for the gold (7).  The answer looks like BULLION (= gold).  But if the two big beasts are BULL and LION, what's happened to the third L?
33d:  Favourite son athlete watched over (4-4,3).  I think it must be BLUE-EYED BOY (= favourite son).  BLUE is athlete, EYED is watched, but what does BOY have to do with "over"?
43d: Looking sadly on ostensibly good drawing (7).  The letters I have are P - T - I - G.  It looks like PITYING (= looking sadly on), but I can't see why.
All help gratefully received please!