橫濱FC香港
Jack Sealy moved to South China in July 2012 to further his career. On 29 September 2012, Dhiego Martins scored in stoppage time from an inch-perfect cross from Sealy, helping the club beat rivals Kitchee 1–0. Sealy scored his first league goal for South China against Yokohama FC Hong Kong on 15 February 2014.