Chris Rogers remains in contention for this week’s third Ashes Test at Edgbaston against England after rejoining Australia’s squad in the midlands.

The 37-year-old opener, who spent the week in London having tests on the injury he sustained during the Lord’s Test, linked up with his team-mates in Nottingham on Friday before the final day of their tour match at Derbyshire.

Rogers was struck on the back of the head by a James Anderson short ball early on day two of the second Test. He went on to score 173 in the first innings and 49 in the second before being forced to retire on the fourth day after suffering dizziness, telling batting partner David Warner he could see the Lord’s grandstand moving.

That was later was diagnosed by specialists in London as a vestibular injury, when damage to the inner ear affects balance and can cause vertigo and dizziness.

But, four days before the start of the Edgbaston Test, Rogers appeared in good spirits in Derby yesterday, walking four laps of the County Ground in the morning before having a few gentle throw-downs on the field during lunch.

Peter Brukner, Australia’s team doctor, said: “Chris continues to improve and has rejoined the team. He will continue to increase his level of activity over the next couple of days and will be closely monitored by team medical staff.”

Australia have been keen to stress Rogers has not suffered another concussion. That kept him out of his side’s recent Test series in the West Indies after he was struck in the nets and so the team’s latest update on his well-being should be taken at face value.

Although the Australia camp have said they hoped Rogers would be fit for Edgbaston, Brukner cautioned: “From my point of view he needs to be free of all his symptoms, whether it’s fatigue or dizziness. And then he can go back to playing or to training. Obviously he has to get through some training sessions. That will be up to the coaches to decide but I imagine he’ll have to get through a couple of solid training sessions before he plays. That’s something we’ll have to sort out with the coaches before he plays.”

Shaun Marsh, who scored a century on the first day of the Derbyshire tour match, is on standby to open for Australia should Rogers be ruled out.