Lyon sustained the injury while fielding at deep-backward square-leg, pulling up while running into collect the ball. Duckett had played a pull shot off Cameron Green which had taken his top-edge, but the ball fell short of Lyon. As he ran into pick it up Lyon looked like he felt some discomfort in his lower right leg.

As he limped towards the boundary rope, the commentators speculated over whether the injury looked like cramp or something more serious. Lyon spent some time sitting on the boundary rope, receiving treatment from the Australia team physio, before being supported around the rope and back into the dressing room.

As cameras focussed on him walking back, Lyon looked to be in significant pain and was walking with a heavy limp. Lyon had already bowled 13 overs in England’s first innings and picked up the wicket of Zak Crawley.

No update was given on the extent of his injury or continued participation in the match on day two, but when the Australia team arrived to Lord’s on day three, Lyon was among them supporting himself on crutches. He was also wearing a compression sleeve on his right lower leg.

After play had begun, Cricket Australia issued an update that Lyon had been diagnosed with a significant cal strain and will require a period of rehabilitation after this match is concluded. A decision regarding his availability for the rest of the series will be made at the conclusion of the game.

It’s unclear what part Lyon will play in the rest of the match, but it looks unlikely he will be able to bowl. There is no news on whether he will bat in Australia’s second innings.

Watch: Nathan Lyon arrives on crutches for day three at Lord’s below

The Australians have arrived 80 minutes before play as Nathan Lyon struggles with his team mates on crutches following his calf injury yesterday. @SEN_Cricket pic.twitter.com/a1lRWLIofm

— Adam White (@White_Adam) June 30, 2023

More to follow.