England are keeping a close eye on Jason Roy ahead of the first T20 against Australia on Wednesday as he battles a back injury.

England sweating on Roy fitness

England sweating on Roy fitness

Roy was forced to pull out of Friday’s warm-up victory against a Prime Minister’s XI in Canberra due to the back problem and he's only rated as 50-50 at best to be fit for England's first game of the tri-series.

The doubt over Roy adds to the injury already affecting pace bowler Liam Plunkett, who has a hamstring strain, while Chris Jordan (hamstring) and Alex Hales (hand) have also been in the treatment room recently.

While skipper Eoin Morgan expects Jordan and Hales to have recovered in time to play in Hobart, Plunkett and Roy remain big doubts at this stage.

Morgan said: 'Jordan and Hales are expected to be fit, Plunkett and Roy are closer to 50-50.

'Jason had a light back spasm, overnight that got worse. He woke up Friday and it was worse. It could be five days which runs him tight up to the game in Hobart.'

Australia won the first game of the series, beating New Zealand by seven wickets via the DLS method on Saturday.