(Not directed at you) show me a case where making such a statement hurt the defendant.
I know of none.
Ayoob, Branca, and Davis recommend doing so.
The issue is whether not doing so can hurt the defendant's case. I had not been aware that it could until Branca related such a case.
I'm nit going to dig for it.
A Platinum LoSD member can find it, and could open the links, which are only available to them.
For the actual decision, one would have to have access to Lexis or a competitor.
What happened was this: a defendant asked for a self defense jury instruction--standard practice.
The judge denied it. That happens.
The reason was something like "you bring that up now, but you did not mention it at the outset. I I'm not going to allow it".
If properly reserved by objection, that is a basis for appeal.