While no further information regarding Hefner’s injury is available, a forearm strain is often something that is diagnosed before elbow ligament damage is discovered.
During his most recent rehab start, Hefner allowed three runs on three hits, two walks, and no strikeouts in one inning of work. His prior rehab starts lasted three innings and four innings, respectively.
If it turns out that Hefner has damaged his surgically repaired elbow ligament, it’s very likely that he’ll need to undergo a second Tommy John surgery.
The above is the worst case scenario, and hopefully not the ultimate outcome here.
Hefner’s injury – no matter how severe – will of course also be linked with Matt Harvey, a much more high-profile Met who is rehabbing from the same surgery.