throw something up to someone or something
to cast something upward to someone or something. Gary threw a hammer up to the top of the porch roof where Ted could get it. Please throw a can of lemonade up to me.
throw something up to someone
to confront someone with something. I threw the whole matter up to her, but she had nothing to say about it. I can't figure out what to do. I will just throw the whole business up to the boss.