Another day, another dead horse at Belmont Park. Work Out, says the Gaming Commission, was euthanized Thursday in [his] stall “due to his injuries.” Although no other details were given, the 3-year-old colt brought up the rear in his most recent race, Oct 17, finishing 24 lengths back (“faltered,” said the chartwriter). Injured then, perhaps? In any event, Belmont, long hailed as one of America’s elite tracks, can now boast three kills in two days (Malibu Luna, Advance Notice) and 40 – yes, 40 – kills on the year. How do the people who support this industry sleep at night?