SOME 44% of all the mares covered in Kentucky in 2021 visited one of the 40 busiest stallions in the state, and in the whole of the USA. Those 40 stallions represent just 20% of all the sires standing in the state.

Three of the four busiest stallions stand at Spendthrift, and three of the four are sons of Into Mischief. He also stands at Spendthrift and covered 214 this year. Into Mischief’s son Goldencents covered 230 mares, one more than Authentic, while Ashford Stud’s Practical Joke was third on the list with a book of 223 mares.