Semi is not a borderline elite defensive player, at least not right now. His defense so far is okay, not great. He had some terrific plays against Giannis earlier in the year, but those have been few and far between. In most games his defense has been average at best. He could get better, but also it is possible he won't. I tend to think that he won't have much of a chance once Hayward gets back. There simply won't be that many mpg for him. I'm not rooting against Semi, no one would be happier than me if ended up being an impact player. I simply haven't seen anything that makes me expect that from him. Right now he is not a good player. I hope he gets better, but I'm not convinced it's likely.