Pirates RHP A.J. Burnett has been diagnosed with a flexor strain in a his elbow and will not require surgery, Fox Sports' Jon Morosi reports.
According to Travis Sawchik of the Pittsburgh Tribune-Review, Burnett already received his first platelet-rich plasma (PRP) injection and could return in four weeks.
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Burnett was placed on the 15-day disabled list on Friday with inflammation in his right elbow. Concerns grew that his UCL was torn and that he would need Tommy John surgery, but it was the flexor that was inflamed.
Burnett struggled in July, posting a 5.84 ERA in six starts. He entered the month with a 2.01 ERA, but began his time on the DL with a 3.06 ERA.