Came to the forum with about 6 unsolved, and the gentle nudges (like reading out 23a to get 24) have helped me get down to one and a half unsolved.
26a: happy with the 4, ... and as I type, the Rubber Duck Effect plus other people's mention of baseball combined to give me the full answer, verified by googling!
Just leaves 19: I have all the crossers but no ideas. ... Yes, I've now got the answer and, after a bit more thinking, can understand the definition too.
So finished, by Sunday afternoon.
Some very clever stuff in there. I liked 28, though in general I don't like chains of clues where you probably can't solve this one until you've solved that one.
Foi: 14
Loi: 19
CoD: 28, 29/12, 1a (took a long time to parse: had forgotten about chess)