In the heart of Canadian boxing country, a long-simmering rivalry is set to explode into the ring. On Thursday, October 30, at the glitzy Montreal Casino, undefeated Canadian superstar Mary Spencer will defend her WBA super welterweight world title against American powerhouse Mikaela Mayer in a clash that’s been brewing for over a decade. What started as mutual respect in the amateur ranks has evolved into an intense professional showdown, now elevated to a three-belt unification bout that could redefine the super welterweight division. With Spencer entering as the fan-favorite champion and Mayer hungry for a third world title, this fight promises fireworks, technical mastery, and a battle for supremacy at 154 pounds.
Mary Spencer, the 40-year-old pride of Windsor, Ontario, isn’t just a boxer – she’s a trailblazer. A five-time world amateur champion and Olympic bronze medalist, Spencer turned pro in 2021 and quickly stormed to the WBA super welterweight crown with a perfect 10-0 record (6 KOs). Standing at 5’11” with an orthodox stance, her reach and power make her a nightmare for opponents. But Spencer’s journey hasn’t been easy; a late start to the pros means every fight is a statement. “I don’t feel like an underdog,” Spencer recently told reporters, emphasizing her confidence despite Mayer’s edge in experience. For Canadian fans, this is more than a title defense – it’s a homecoming for a fighter who’s carried the nation’s hopes on her broad shoulders.
Enter Mikaela Mayer, the 35-year-old from Woodland Hills, California, a two-division world champion (super featherweight and lightweight) with a 21-2 record (5 KOs). At 5’9″, Mayer’s blend of slick footwork, sharp counterpunching, and relentless pressure has earned her comparisons to the sport’s elite technicians. After dropping a controversial decision to Natasha Jonas in 2022, Mayer rebounded with wins over Christina Linardatou and now eyes Spencer’s belts – including the newly added WBO and IBF super welterweight titles – to cement her legacy as a multi-weight queen. “This is the fight I’ve been waiting for,” Mayer said in a pre-fight interview, nodding to their shared history from the 2012 Olympics, where paths nearly crossed but never did.
Their amateur overlap adds poetic tension: Both women dominated the scene in the early 2010s, with Spencer earning Olympic glory and Mayer grinding through the ranks. Now, 13 years later, they’re finally settling scores in the paid ranks – a narrative that’s captured the boxing world’s imagination.
Originally slated as a WBA title defense, the bout ballooned into a unification war just days before fight week. Mayer’s team secured the WBO and IBF straps, putting all three major belts up for grabs in this 10-round super welterweight thriller.
A win for Spencer would solidify her as Canada’s premier female fighter, potentially setting up dream matchups against the likes of Claressa Shields. For Mayer, victory means a triumphant return to title contention and a shot at becoming the first woman to hold super featherweight, lightweight, and super welterweight gold simultaneously.
The undercard adds sizzle too, featuring rising Canadian talents like Wilkens Mathieu vs. Shakeel Phinn in welterweight action, Movladdin Biyarslanov challenging Sergey Lipinets for interim gold, and Mehmet Unal vs. Ralfs Vilcans in a lightweight clash. It’s a stacked night of North American boxing talent, broadcast live from the 2,500-seat venue that’s already buzzing with sellout energy.
How to Watch: Free Streaming for All
Boxing fans won’t want to miss a punch, and luckily, accessibility is key. The entire card streams live and free on the Top Rank Classics FAST channel, Top Rank Boxing’s dedicated 24/7 platform. Coverage kicks off Thursday, October 30, 2025 at 8:00 p.m. ET / 5:00 p.m. PT (1:00 a.m. GMT Friday in the UK), with the main event ringwalk expected around 10:00 p.m. ET.
Viewing Options:
Streaming Platforms: Available on Roku Channel, Tubi, Vizio WatchFree+, and Pluto TV. Simply download the app on your smart TV, streaming device, or mobile, search for “Top Rank Classics,” and tune in – no subscription required. For international viewers, the same free stream applies via these services.
No Traditional TV Broadcast: This event skips cable in favor of digital-first delivery, making it easier for cord-cutters.
Tickets (If You’re Local): While the arena is nearing capacity, resale options are available on StubHub starting from $0 (yes, really – check for last-minute steals) or SeatGeek for limited seats. Doors open at 6:00 p.m. ET.
Post-fight highlights and full replays will be available on the Top Rank YouTube channel and the Classics platform shortly after the final bell. For more information visit: www.TopRank.com
In an era where women’s boxing is exploding – thanks to icons like Katie Taylor and Amanda Serrano – Spencer vs. Mayer stands out as a crossroads bout. Spencer, the late-bloomer veteran, represents resilience and homegrown grit. Mayer, the polished technician, embodies ambition and evolution. Their shared history ensures this isn’t just a title fight; it’s personal.
Tune in Thursday night as Montreal becomes the epicenter of the boxing world. Will Spencer’s power overwhelm Mayer’s precision, or will the American challenger dethrone the queen? One thing’s certain: The super welterweight division will never be the same.
