On July 29th, 1962, 22-year-old Willie Stargell was put through waivers. He was not out of options and was hitting .306 at AAA. The waivers are revocable, and strangely nobody has claimed him through the entire process. I'm resisting all urges to do it myself.
EDIT: Now that I look at the transactions screen, they're putting them through to take them off the 40-man roster. Justin, did those prospects get released or were the waivers revoked?