Apprentice Thomas Yeung Kai-tong felt the wrath of stewards after a moment's carelessness caused havoc for half the field in yesterday's opening race. Yeung, riding winner King Acryllic for Almond Lee Yee-tat, pleaded guilty to a charge of careless riding over an incident near the 800m, in which he permitted his mount to shift in when not clear of favourite Pure Alpha (Felix Coetzee), causing the latter to be checked and lose its rightful running. The chain reaction started by that incident inconvenienced six other horses to varying degrees. Stewards suspended Yeung until January 15 with immediate effect. Fellow apprentice Alex Lai Hoi-wing was also hit with a careless-riding charge from an incident in the early stages of the fifth race. Lai, riding Island Speed, pleaded guilty for permitting his mount to shift in when not clear of Express Mail, who lost his rightful running and had to be checked. Lai was suspended for two meetings and fined HK$10,000, though the start of the suspension has been deferred until January 7.