NJPW issued the following:
Update regarding Katsuyori Shibata’s condition
Katsuyori Shibata was taken to hospital due to poor health following his main event match on April 9th at Ryogoku Sumo Hall. He was conscious and able to communicate while being admitted to hospital.
After a medical examination, he was diagnosed with subdural hematoma and surgery was conducted as part of his treatment. He is now recovering following a successful operation.
Updates will be posted as his condition progresses.
New Japan Pro-Wrestling Co., Ltd.