Rogers recovering after retiring hurt

Australia opener Chris Rogers' condition is still unknown after a sudden dizzy spell forced the veteran from the field on day four of Australia's emphatic win in the second Ashes Test.

Following the completion of the second over of the day, Rogers signaled to the dressing room his duress from the non-striker’s end, before slumping next to the Lord’s pitch with opening partner David Warner by his side.

Bupa Support Team physiotherapist Alex Kountouris and doctor Peter Brukner were quickly on the field as Rogers indicated with his hand that his head was spinning, before being helped off and retiring hurt on 49.

Australia captain Michael Clarke was unsure on his opening batsman's progress when he spoke to the media after Australia completed a 405-run demolition of England, but was confident Rogers would be fit to play the third Test in Birmingham in nine days' time.

"I don’t know enough about it at this stage," Clarke said. 

"But it sounds to me that today’s incident is no relation to him getting hit in the West Indies or even the other day. 

"We’ll wait and see the result and let the experts have a look at him and make their decision."

Rogers was ruled out of the two-Test tour of the Caribbean last month after suffering symptoms of concussion from a blow to the helmet by a net bowler in Dominica.

The 37-year-old ducked into a James Anderson bouncer on the first ball of day two, but carried on to finish with 173 – his highest Test innings.

Rogers is hit by Anderson on day two

Rogers, who was also hit in the head during a Sheffield Shield game while fielding at short leg last year, admitted in the lead-up to the Ashes he was concerned about the symptoms he experienced in the Caribbean.

"I've been hit in the head plenty of times and never really had that," he said. "We do have to be a little bit concerned about it.

"You have to look after yourself with head injuries."

When Rogers was ruled out of the West Indies Tests, Dr Brukner said Australian cricket would no longer take any chances with concussions.

"This is a black and white rule now," the doctor said.

"If someone is concussed they don't play.

"We used to believe concussion was a relatively insignificant condition and I think now all the evidence shows that we've got to take it much more seriously.

"Cricket Australia is similar to the football codes in that we are adopting that more serious approach."

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