The trainer, Jack Jones, is based in Newmarket — the heartbeat of British flat racing — and has been in fine form this season, sending out 33 winners. That kind of output from a single yard is not accidental. It suggests a well-run operation with horses coming to the track in good shape. For a 4-year-old making a debut, having that kind of experience behind you matters. Crack Of Thunder arrives with no reputation to speak of, but with a promising pedigree and a trainer who clearly knows how to get a horse ready to run.