Chris Rogers retires for Australia after dizzy spell

Australia opener Chris Rogers retired hurt during Sunday's second innings after suffering a dizzy spell - two days after being hit on his helmet by a ball from Jimmy Anderson.

After two overs' play on Sunday, Rogers, who was at the non-striker's end, crouched down by the side of the pitch and then sat motionless.

Worried batting partner David Warner signalled for medical staff to come out onto the field and after a few minutes' treatment, Rogers, who had added five runs to his overnight score, walked off on 49 not out, with Australia 114 without loss.

The subject of increased protection for players has been much discussed within cricket following the passing of former Australia batsman Phillip Hughes, who died after being struck in the neck by a bouncer in November.

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The 37-year-old Rogers, who has said he plans to retire after the end of this series, received sympathetic applause from a packed crowd at Lord's, where he spent several seasons with Middlesex, as he made his way into the pavilion.

"Chris Rogers suffered a sudden dizzy spell while batting," team doctor Peter Brukner said later on the fourth morning of the second Ashes Test against England at Lord's.

A team spokeswoman added that Rogers, who had shown no signs of illness before play started on Sunday, stayed at Lord's after coming off the field.

Rogers missed Australia's recent 2-0 series win in the Caribbean with concussion after being hit on the head while batting in the nets.

Last summer he was also struck on the helmet while fielding at short leg against India in Brisbane, a hit that Rogers admitted had briefly caused him to consider his future.

And during the first innings of this match, during his Test-best 173, Rogers was struck flush on the side of the helmet by Anderson when he turned his head away from the opening ball of Friday's second day.

The blow caused a cut above his right ear but Rogers batted on after treatment.

On Sunday, Rogers' place in the middle was taken by Steven Smith, whose first-innings 215 was also his highest score in Tests.

England lead the five-match series 1-0 after their 169-run win in the first Test in Cardiff last week.