This probably isn’t a good sign for former Heisman winner and likely top-five pick Jameis Winston. Scheduled to attend the annual NFL Scouting Combine in Indianapolis this week, the former Florida State quarterback has delayed making any public appearances because of continued medical tests.

There wasn’t a whole lot of information out regarding what these tests involved up until recently.

ESPN insider Chris Mortensen, reported on Friday that Winston underwent further testing to determine the potential cause for weakness in his throwing shoulder.

Needless to say, this is alarming for those considering selecting Winston in April’s draft. We have seen many quarterbacks fall victim to chronic shoulder issues. Former New York Jets and Miami Dolphins quarterback Chad Pennington is a recent example of this.

The Electromyography that Winston underwent is defined as a “diagnostic procedure to assess the health of muscles and the nerve cells that control them,” according to the Mayo Clinic.

The key here is nerve cells. If there’s nerve damage in Winston’s throwing shoulder, that will be cause for alarm.

If Winston’s health of called into question, it could become the biggest story of the 2015 NFL draft. It could also cause him to drop dramatically come draft time.