The Jockey Club's Report of Mares Bred (RMB) statistics reflects that through Oct. 18 of this year, 867 stallions covered 26,597 mares in North America during the breeding season, a decrease from 2022 when 925 stallions covered 27,163 mares, the organization said in a release early Friday. They estimate an additional 2,500 to 3,500 mares will be reported as bred during the 2023 breeding season. Kentucky traditionally leads North America in Thoroughbred breeding activity. During 2023, Kentucky's 199 reported stallions covered 16,953 mares, or 63.74% of all of the mares...