Cricket - Ashes 2019 - Second Test - England v Australia - Lord's Cricket Ground, London, Britain - August 17, 2019 Australia's Steve Smith walks after losing his wicket Action Images via Reuters/Paul Childs
MELBOURNE (Reuters) - Batsman Steve Smith must be free of concussion symptoms for 24 hours before he can begin return to play protocols, Australia's sports medicine manager has said, making him a doubt for the third Ashes test starting on Thursday.
Smith suffered a sickening blow to the neck from a Joffra Archer bouncer during the second test at Lord's, forcing him off the ground for a medical assessment.
