David Warner has revealed that fellow opener Chris Rogers said he saw the Lord's grandstand moving during the dizzy spell which ended his second innings in Australia's win in the second Test of the Ashes series.
Rogers was on 49 on the fourth morning of the Test, before he had to sit down in the middle of the pitch for several minutes and then retire ill after consulting with the Australian medical staff.
The problem has been attributed to when the batsman was hit on the helmet by a short ball from Jimmy Anderson two days earlier.
Warner, who was batting alongside Rogers at the time, told Australia's Daily Telegraph: "I came down the wicket and I had to look twice, because I didn't really know what was going on.
"He actually said to me 'the grandstand is moving' and I said 'no, it's not'. I was worried and so was he."
The 37-year-old suffered concussion in the West Indies last month and had to miss two Tests.
As yet it is unknown whether he will play in the next Test, which starts next Wednesday at Edgbaston.