The runner was placed, applies to EACH_WAY marketTypes only.
REMOVED_VACANT applies to Greyhounds. Greyhound markets always return a fixed number of runners (traps). If a dog has been removed, the trap is shown as vacant.
The selection is hidden from the market. This occurs in Horse Racing markets were runners is hidden when it is doesn’t hold an official entry following an entry stage. This could be because the horse was never entered or because they have been scratched from a race at a declaration stage. All matched customer bet prices are set to 1.0 even if there are later supplementary stages. Should it appear likely that a specific runner may actually be supplemented into the race this runner will be reinstated with all matched customer bets set back to the original prices.