Spendthrift Farm LLC’s Lord Nelson, the 5-2 second choice on the morning line, has been scratched from Saturday’s TwinSpires Breeders’ Cup Sprint with a minor injury. “He got a little nick a couple of days ago and it became infected,” trainer Bob Baffert said. “We had to treat him with antibiotics so he won’t be able to run. But, he’s going to be all right.” The defection of Lord Nelson leaves a field of seven in the Sprint. Joking was scratched Wednesday.