Should doctors have given Sonny Bill Williams concussion tests? PAUL SEISER/PHOTOSPORT Sonny Bill Williams takes time out after suffering a knock during the test in Sydney. Sanzaar is looking into whether medical officials should have conducted concussion tests on All Blacks centre Sonny Bill Williams during the Rugby Championship opener against the Wallabies. DIANNE MANSON/GETTY IMAGES Sonny Bill Williams trained with the All Blacks in Dunedin on Tuesday, but didn't play a full role. "Sonny took a knock in the weekend but he was symptom-free," Foster told reporters in Dunedin.

Source: Stuff August 22, 2017 06:22 UTC