Mitchell Report Question?

I'm only 16, so I'm not dumb, I just want to understand. Why is this Mitchell Report so big in MLB. Until this report came out, I had never heard of this Mitchell guy. Who is he?? Why does his word seem to be the word that everyone is living by?? What makes him so credible and why is everyone jumping... show more I'm only 16, so I'm not dumb, I just want to understand.

Why is this Mitchell Report so big in MLB. Until this report came out, I had never heard of this Mitchell guy. Who is he?? Why does his word seem to be the word that everyone is living by?? What makes him so credible and why is everyone jumping on any player named in it??

Thanks for the help!!
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