By Wally Pyrah FAVOURITE backers will be in their element, weather permitting, on the Sha Tin card, with a number of gallopers likely to go off at very short odds. The John Size-trained winning debutant The Winnabe, looks to have a virtual penalty-kick in the Pok Fu Lam Public Riding School Handicap (10.30am) over six furlongs, while Purton’s mount Super Infinity is likely to start odds-on in the Hong Kong Riding for the Disabled Association Cup (11.35am). The Chris So-trained Master Of All lines up the Lei Yue Mun Public Riding School Handicap (11.00am) over seven furlongs, and is another sur…