Herring put Frampton on the canvas with a left hand in the fifth round and repeated the dose in the sixth, a hit from which he could not recover.
“I just got beat by the better man,” said Frampton, whose defeat was his third in 29 fights. “I really struggled to get inside him.
“He is sharp-shooting, from a distance, and had a perfect game plan. Zero excuses.”
Herring, 35, has held the WBO belt since 2019 and his victory was his 23rd in 25 outings.
Herring said: “It was an emotional rollercoaster just to get here. People doubted me, they called me every name in the book but, even with the cut, I wasn’t going to quit.
“Carl Frampton has been a tremendous champion. I have been a fan since day one. It is tough to see any veteran go out like that, I am glad he is able to walk out on his two feet. It has been a great night.”
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