Big Book, injured at a Del Mar training session Saturday, was euthanized Monday, according to the Daily Racing Form. The 4-year-old filly becomes the third Del Mar casualty from Saturday, joining Whisky and Wine and Dutchessa. And – this means that at least nine racehorses have either died on Del Mar grounds or while being trained off-site for upcoming Del Mar races. Nine, at least, in two weeks. Carnage.

The identified dead at “Cool As Ever” Del Mar:

Presidential Air, July 15, race 6
Dynamite Charge, July 17, training
Whisky and Wine, July 23, training
Big Book, July 23, training (euthanized July 25)
Dutchessa, July 23, race 2
Fasnacloich, July 24, race 2

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