WBA welterweight champion Jack Catterall believes Jaron Ennis is the best fighter he has ever shared the ring with, placing the unbeaten American above both Floyd Mayweather Jr. and Canelo Alvarez.
Catterall has experienced elite company throughout his career. He served as a sparring partner for Mayweather during preparations for the Manny Pacquiao fight in 2015 before later helping Canelo Alvarez get ready for his clash with James Kirkland.
Yet neither man left the impression that Ennis did.
“I would go as far as saying that he is one of the best fighters that I have sparred or been in the ring with; the speed, the power, the timing, the footwork,” Catterall said to Pro Boxing Fans.
“So, I am excited for that fight. I am going to try and make the trip over there and support him. I think that it is a good night’s work for him.”
When asked if he expected Ennis to stop Xander Zayas, Catterall gave a straightforward prediction.
“I believe [that he will stop Zayas].”
Ennis moved up to junior middleweight after establishing himself as one of the leading welterweights of the post-Terence Crawford era, unifying major titles at 147 pounds before pursuing further success in a second division.
He is scheduled to challenge Zayas for the unified 154-pound championship on June 27 at the Barclays Center in Brooklyn, New York. A victory would strengthen Ennis’ growing reputation as one of boxing’s elite talents, and, in Catterall’s view, validate why he stands above every other fighter the Briton has encountered in the ring.

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Last Updated on 2026/06/10 at 3:15 PM
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