LONDON – Australia batsman Steve Smith has been ruled out of the rest of the second Ashes test against England at Lord's due to delayed concussion, Cricket Australia said on Sunday.
Smith was struck on the neck by a Jofra Archer bouncer during his innings on Saturday, forcing him to retire hurt, but he returned to the crease 40 minutes later and added 12 runs before being dismissed for 92.
"Steve Smith has been closely monitored by medical staff overnight," Cricket Australia said in a statement.
"He slept well but woke up with a bit of a headache and feeling of grogginess."
"As part of the Cricket Australia concussion protocol, repeat testing was performed this morning and demonstrated some deterioration, which is consistent with the emergence of the symptoms he was reporting. On that basis, he has been withdrawn from the match."