Hayward is a capable defender, not as good on ball as Bradley, but his length should actually provide some benefits that Bradley could not in the overall team scheme. Hayward is more than able to check most shooting guards, he's a better defender than many think. Having said that, I wouldn't be surprised if CBS went with Brown in the starting line up, he played good D last year and did well as a starter. A lineup of IT, Brown, Hayward, Horford and one more (Baynes, Morris, Crowder...take your pick) makes sense too.