Is it possible to hide giveaways from a blacklisted user?

So I recently blacklisted a certain person and was surprised to still see his giveaways. Not participating in his giveaways was on of the main reasons I blacklisted him. (I eventually did manually remove myself from all his giveaways that I was in)

Is there a way to do this?

I'm not placing this in Bugs / Suggestions, since the feature may already be here.