By Wally Pyrah RACING enthusiasts can look forward to an action-packed eight-race programme on the all-weather surface at Sha Tin in Hong Kong today. With rain forecast once again, bettors should pay particular attention to how the track is riding in the early contests. On the all-weather track early last month, it paid to follow gallopers up with the early pace from the off, but just over three weeks later the majority of winners were finishing strongly down the centre of the track. There is no doubt jockey Karis Teetan has been in a league of his own when riding on the all-weather this seaso…