All we have is this amateur montage of Sims. He has over 5 fights as a professional, but they are not recorded. He is a decorated amateur, #1 in the USA before he turned pro at 132.

He really has patterned his style after Floyd a bit. lol... his biggest loss as an amateur came against Ivan Onate (CUB) at the 2013 Independence Cup. Score was 18-15.