Who is the worst GM is pro sports history?

[Dids]

Isiah's good drafts don't really make up for the other horrible mistakes. He drafted good players, but with no sense of trying to build a team, which is the same way he trades to get famous people no matter where they fit.

I can't think of anybody who has been worse in my lifetime.

I have no idea how you measure this, but I feel like at least 60% of GM's lifetime would be listed "bad"