Sun Yang's coach: "Sun is justified in refusing to let people not properly qualified to do whatever or tamper with the samples"

"Sun (Yang) is justified in refusing to let people not properly qualified to do whatever or tamper with the samples, Denis Cotterell, an Australian coach of the Chinese Olympic champion for 10 years, spoke to Xinhua right after a public hearing at the Court of Arbitration for Sport (CAS) on Friday.