Placed on the 15-day DL with an "elbow injury" yesterday after experiencing a loss in velocity in his Saturday start, Beachy underwent an MRI with team doctors that revealed the partial tear.
The injury, often a precursor to the dreaded Tommy John surgery, will likely shelve the 25-year-old for the remainder of season. Beachy is expected to get a second opinion from Dr. James Andrews some time tomorrow to determine whether TJ surgery is avoidable.
The young right-hander has shown flashes of brilliance in his brief career, amassing a 3.07 ERA, 9.5 K/9 and 3.1 BB/9 in 41 starts across the past three seasons.
Beachy, who is tied for the league lead this season with a 2.00 ERA, will be replaced in the rotation by the recently demoted Jair Jurrjens.