The Yankees left Mickey Mantle unprotected? They must have known he was retiring anyway, as he did not play in 1969.
Did not know about Wilhelm.
The answer I knew about is:
Jim Palmer !
Yes, JP was on the DL for 9 millionth time and the Orioles thought he would never really live up to his potential and left him available. The Pilots and Royals apparently thought that the Orioles must know their stuff, so no one drafted him.
Think of the possibilities ! The chapters of Ball Four that might have been written had Bouton interacted with the most neurotic player ever, even as Palmer's brilliant pitching lifted the Pilots into the division race...