Roman Reigns Out of WWE Night of Champions Due to Emergency Surgery

WWE.com has learned that Roman Reigns has undergone emergency surgery
for an incarcerated hernia. Reigns had been in Nashville to promote
tomorrow's Night of Champions pay-per-view. His recovery time will be
evaluated by the local surgeon and WWE physician Dr. Chris Amann, but
he will be unable to compete against Seth Rollins tomorrow night.
Check back with WWE.com for further updates on Reigns' condition.

The announcement went on to state that WWE Network will run a special
report on this development and Roman's condition at 1PM Eastern time.
(yahoo news)