The Menagerie. Kirk says he met Pike when he took over the Enterprise. So Pike was present (and pre-accident, as when Kirk saw Pike in his box/chair in the episode, it was clearly the first time he'd seen him in that state) at the time. He is not aware of Pike's accident; it was recent (at 1:11):What is the source for that?
Ironically, I think Kirk says he only met Pike that once. Which SNW clearly shows otherwise.