Mikaela Mayer beat Mary Spencer by marching straight into her backyard, taking the door off its hinges and helping herself to every belt on display.
The Montreal crowd came roaring for their hometown favorite, but by the third round you could hear a pin drop. Mayer wasn’t there for selfies or sightseeing. She came to put in a shift, and at the final bell, Spencer looked like she’d been through a storm.
Ten rounds of sharp, hateful boxing – jab, hook, press, repeat – and it wasn’t close. The cards said it all: 100-90, 98-92, 98-92. A schooling.
Mayer left Canada with the WBA, WBC and WBO super welterweight titles tied around her shoulders and added it to her WBO welterweight crown.
Four belts. Two sections. One fighter who refuses to be anyone’s stepping stone.
The smaller woman fights like the bigger boss
On paper, Spencer was supposed to be the stronger one — the local hero, the bigger frame, the puncher. But paper lies.
As soon as the bell rang, Mayer began bullying her. Walked her down behind a tight jab, slid inside and hit those right hands to the body like she was collecting rent.
Spencer tried to circle out, but Mayer cut off the ring like a pro, not giving her a sniff of a break. By the halfway point, Spencer’s game plan looked about as solid as wet cardboard.
“Usually I’m the taller fighter,” Mayer said afterward, still smiling through some blood and sweat. “But because I’m usually the taller fighter, I also know how to beat me. I knew I had to get under Mary Spencer and come over with big hooks. That’s what we’ve been training for.”
And fair play – she got it right. The last few laps were one-way traffic. Mayer walked her down like she owned the place, snapping her head back and landing clean hooks at will. Spencer looked like she wanted to be somewhere else.
Mayer’s rebuild was brutal — and she’s finally back on top
You could say this one meant a lot. The past few years have not been good for Mayer. Bad breaks, tough losses, dull matches – she had to claw her way back. But now she’s exactly where she belongs, with gold on her shoulders and a point to prove.
“I think the most important thing is that I have options,” she said. “You always want options. I came from two years where my career kind of took a left turn. I had to navigate my way back to this position. Having options is a blessing.”
And she has them. Mayer can drop back down to 147, chase uncontested, or stay put and defend at 154. Either way, she’s the one holding the cards right now.
“I can go back to 147, go uncontested there, and maybe come back up and defend at 154,” she added. “We will discuss it with the team.”
You can tell she means it. No PR fluff. Just a warrior who talks like someone who’s been down, dusted off, and figured out who she is again.
Ring side view
From ringside, it was clear who was running the show. Mayer was in no rush. Didn’t move into anything stupid. Just packed – mean, neat, patient.
Spencer had her moments early on, but once Mayer found her rhythm, she just turned the screw. Each round, a little more pressure, a few more clean shots, until the noise in the arena is completely dead.
It wasn’t flashy. It was proper, hard, professional work – the kind that doesn’t make viral clips but wins big fights. You could see Mayer’s composure from one o’clock. No nerves. No panic. Just control.
By the end, Spencer was still standing, but that was about all she could ask for. Mayer didn’t celebrate big, didn’t show off. She just smiled – that quiet “told you so” smile – the kind fighters wear if they just shut everyone up.
Three new belts, one more layer to her legacy.
Mayer is back, and she has even more to take.
Undercard results:
- Wilkens Mathieu def. Shakeel Phinn – UD (99-90, 98-91 x2) – won NABF and WBC Continental Americas Super Middleweight titles
- Arthur Biyarslanov def. Sergey Lipinets – UD (97-92, 99-90, 96-93) – Retained NABF Junior Welterweight Title
- Mehmet Unal def. Ralfs Vilcans – TKO1 (2:44) – Retained WBC Continental Americas Light Heavyweight Title
- Christopher Guerrero def. Williams Andres Herrera – UD (97-93, 99-91, 98-92) – retains WBC Continental Americas welterweight title
Last updated on 31/10/2025
