Conor McGregor declared Katie Taylor to be "Ireland's greatest" after his compatriot retained her status as undisputed lightweight champion with another knife-edge thriller against Delfine Persoon.
Taylor, 34, extended her unblemished professional boxing record to 16-0 with a narrow unanimous decision win over Belgium's Persoon, who she claimed a contentious triumph over in New York last June to unify the WBC, WBA, IBF and WBO belts at 135 lbs.
Saturday's return at Matchroom Fight Camp was another close encounter, with Persoon's relentless style again causing problems for the technically brilliant Taylor, but the champion's crisper work was enough to prevail 96-94 on two cards, along with being awarded a bizarrely wide 98-93.
McGregor, the recently retired UFC star, has long been a vocal admirer of Taylor and tweeted to claim she had found a definitive conclusion to the Persoon rivalry.
He tweeted: "Huge congrats Katie Taylor!!! Put that one to bed for sure, no questions!
"Top drawer stuff as always from Ireland’s greatest!"
Taylor, who also won the WBO light-welterweight title by beating Christina Linardatou last November, conceded she had been subjected to another gruelling night's work against Persoon, who slips to 44-3.
"It's never easy against Delfine, she is relentless. I knew I had to dig deep," Taylor told Sky Sports.
"I boxed better last time. I stuck to my boxing more. That got me through. I hit her with clean shots but she attacked all the time."
In the main event in Brentwood, Alexander Povetkin left Dillian Whyte's world heavyweight title ambitions in tatters by recovering from two fourth-round knockdowns to demolish his foe with a brutal left uppercut in round five.