I'm looking to buy a new horse and found one that may be what I want. He's said to be able to jump 3'9. His old owner said that he used to jump that, at least, but she's been unable to give him the attention he needs, so he's been 'sitting' for awhile. Before anything, of course, I'm going to go and test him out. But before I even do that, I'm wondering at what age a horse should stop [or rather still be able to] jump. He's 14, but she said she's shown him in jumpers and eventing in the past, and he is a OTTB. While she says he doesn't have any health or soundness issues, I'm wondering what your thoughts are on a horse like this. I don't want to get him if he's only got a little bit of jump left in him, as I'm looking for a horse I can start showing with again.