TRAINER John Size is the man to follow when racing in Hong Kong gets underway on Sunday morning with an 11-race programme at Sha Tin. The 13-time champion trainer made his renowned slow start to the current campaign, with just a handful of winners in the first three months of the season, but the ball is beginning to roll for Size and his rivals at the top of the trainers’ leaderboard will be on edge seeing him beginning to hit form. The master…