Numbers (NZ) (Tivaci) firmly advanced his credentials for the remainder of the Hong Kong Four-Year-Old Classic Series with a commanding victory in Sunday’s Gr.3 Centenary Vase Handicap (1800m) at Sha Tin. The Frankie Lor-trained galloper dominated his six rivals, each with a Group-level winning profile, as he led from start-to-finish on his way to a two-length victory in the HK$4.2 million contest. The Tivaci gelding went off a strong $1.7 favourite on the strength of an eye-catching front-running victory in December, his first in Hong Kong. The handicapper…