Platinum Emperor (NZ) (Sweynesse) and Cavalry (NZ) (Tavistock) renewed their rivalry after finishing 1-2 respectively in the Mitavite Asia Cup (Metro A – 1400m) three weeks ago and repeated that result in the Supreme A race over 1600m at Selangor racecourse in Malaysia on Sunday. Whereas Platinum Emperor was hard-pressed before winning by half a length last time out, the Sweynesse gelding had it much easier this time, coasting home by 2-1/2 lengths to bring his record in the country to three wins from four starts for the former Macau…