Referees stopped the fight, declaring Rodriguez the winner by technical knockout, and doctors jumped into the ring to attend to Diaz, place him on a stretcher and take him to University Hospital. A ringside physician, Dr. Wayne Lee, said Diaz was unconscious and unresponsive but was breathing on his own and had a blood pressure.
Promoter Donna Brooks told the San Antonio Express-News that Diaz was to have surgery overnight for suspected bleeding in his brain.
Hospital spokeswoman Leni Kirkman said she had no new information on the 5-foot-10, 147-pound fighter Thursday morning.
