John Size was one of the top horse trainer in Sydney. He arrived in Hong Kong as horse trainer in 2001 and got a reputation for improving and rekindling the spark in his horses. He gained the trainers' premiership on 2002, 2003, 2004, 2006, 2008, 2010 and 2012. In 2010/11 he added 64 winners for a career total of 625. His 62 wins in 2013/14 took his overall HK career total to 821.