Sri Lanka paceman Dushmantha Chameera is set to miss the three-Test home series against Australia with a back injury that has forced him to return home from their current tour of England.
Sri Lanka's cricket board announced the news on Tuesday compounding the team's woes in England after being humiliated by an innings and 88-runs in the first Test at Headingley last week.
Australia face Sri Lanka in Kandy, Galle and Colombo from the end of July.
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The islanders lost pace bowler Dhammika Prasad to a shoulder injury even before the first Test, which England wrapped up inside three days.
Even in that huge defeat, the 24-year-old Chameera managed to impress by dismissing top-scorer Jonny Bairstow, Moeen Ali and Stuart Broad in England's first innings.
"Chameera ... underwent an MRI/CT Scan this morning, which has indicated a stress fracture to his lower back, and medical recommendation is treatment and rest for as much as four months," Sri Lanka Cricket said in a statement.
The team would name a replacement soon, it added.
Prasad, who has since been replaced by wicketkeeper-batsman Kusal Perera, had been undergoing treatment, the board added.
The second match of the three-Test series begins at Chester-le-Street on Friday.