Jockeys Jorge A. Vargas, Jr. and Jalon Samuel have tested positive for COVID-19 and will be off their mounts for the remainder of the weekend, the New York Racing Association, Inc. announced Friday. All members of the NYRA jockey colony are vaccinated and adhere to established protocols. Vargas, Jr. rode races on Thursday, Dec. 30 and sought testing Friday after developing mild symptoms overnight. Vargas, Jr. did not experience symptoms during Thursday's card. Samuel had no mounts during Thursday's card and was not on-site at Aqueduct. He sought testing after...