England are sweating on the fitness of Stuart Broad who suffered an injury on the opening day of the Ashes series and was unable to bowl during the early overs of Australia's first innings on Wednesday evening.
The England all-rounder was struck on the right shoulder by a ball from James Pattinson while batting and had to leave fast bowling duties to James Anderson and Steven Finn.
Broad's chances of bowling on Thursday will depend on how his injured shoulder responds to ice treatment overnight.
He was struck on the same shoulder - although in a different spot - where he was given a cortisone injection on a sore joint last week which enabled him to line up in the first Test at Trent Bridge on Wednesday.
Finn, who took two wickets as Australia were reduced to 75-4 before close of play, said of Broad: "The extent of the damage, I don't know.
"He'll receive treatment overnight and he'll come back on Thursday when we'll see how he is.
"We're hoping he'll be fit. If not I'll have to bowl a few more overs, I think, and we'll just have to rotate ourselves."
On a remarkable first day of the five-Test Ashes series, 14 wickets fell in Nottingham after England were bowled out for 215 after skipper Alastair Cook won the toss and elected to bat.