Sims is a long and rangy defensive back with the ability to play cornerback or free safety on the next level. With Sims, what stands out immediately is his frame and length. He covers a lot of ground and he can get his hands on a lot of footballs in coverage. He is still thin, so he needs to add mass and strength, but that should come in time. In coverage, he is best when playing off coverage. He can still improve his quickness in short space. He has great body control, he can make plays on the ball and he is a very smart defensive back in coverage. His tackling is solid.