<p>On a seven-fight card that features five title bout, the headliner in Montreal, Canada, on Friday, October 31, at the Casino Montreal is the one that many will be keeping an eye on.</p> <p>Canadian Mary Spencer will defend her WBA World Female Super Welterweight Title against American Mikaela Mayer, but is it a losing battle? We’ll find out from 10:00 AEST, with the fight being the final one of the event.</p> <p>It’s a bout featuring two highly competitive and successful female boxers, though there may be questions about one or two aspects…</p> <h2>Mary Spencer vs Mikaela Mayer: Tale of the Tape</h2> <p>When making our Mary Spencer vs Mikaela Mayer betting prediction, we’ve examined how the two fighters compare. We think looking at the tale of the tape can help when comparing the two, as it can highlight potential areas that may provide betting value.</p> <p>Let’s take a look at the key metrics of both boxers, with Spencer’s appearing first…</p> <ul> <li>Age - 40 vs 35</li> <li>Height - 5'11" (180cm) vs 5'9" (175cm)</li> <li>Weight - 153.5 lbs (69.6 kgs) vs 146.0 lbs (66.2 kgs)</li> <li>Reach - N/A vs 66.5" (169cm)</li> <li>Stance - Orthodox vs Orthodox</li> <li>Record - 10-2-0 vs 21-2-0</li> </ul> <h2>Mary Spencer vs Mikaela Mayer: Betting Preview</h2> <p>Both fighters have a strong recent record, having amassed positive records throughout their careers. One area that may be worth considering is the age gap between them; especially with Spencer being in the twilight of her career.</p> <p>Still, she is the champion for a reason and has continued to put in impressive displays inside the ring. Still, Mayer has been just as dominant recently, entering the fight off the back of consecutive victories over Sandy Ryan…</p> <p>Spencer’s Last Five Fights:</p> <ul> <li>Ogleidis Suarez - Win (UD, 10) - Apr 2025</li> <li>Naomi Mannes - Win (UD, 10) - Sep 2024</li> <li>Sonya Dreiling - Win (TKO, 1) - Jan 2024</li> <li>Femke Hermans - Loss (MD, 10) - Oct 2023</li> <li>Femke Hermans - Loss (UD, 10) - Dec 2022</li> </ul> <p>&nbsp;</p> <p>Mayer’s Last Five Opponents:</p> <ul> <li>Sandy Ryan - Win (UD, 10) - Mar 2025</li> <li>Sandy Ryan - Win (MD, 10) - Sep 2024</li> <li>Natasha Jonas - Loss (SD, 10) - Jan 2024</li> <li>Silvia Bortot - Win (Points, 10) - Sep 2023</li> <li>Lucy Wildheart - Win (UD, 10) - Apr 2023</li> </ul> <h2>&nbsp;</h2> <h2>Mary Spencer vs Mikaela Mayer: Betting Predictions</h2> <p>The latest <a href="https://www.sportsbet.com.au/betting/boxing/grade-b-fights/mary-spencer-v-mikaela-mayer-9556175">betting odds for Mary Spencer vs Mikaela Mayer</a> have the challenger as the huge favourite heading into the upcoming WBA World Female Super Welterweight Title fight. Indeed, we would predict that Mayer takes victory in this one.</p> <p>When looking for value, we’d suggest the ‘Mikaela Mayer Points or Decision’ bet in the ‘Method of Victory’ market. Both fighters have consistently gone the distance in their fights. Additionally, Mayer’s two pro defeats have come against accomplished female fighters in Natasha Jonas and Alycia Baumgardner (both as split decisions).</p> <p>She should overpower the 40-year-old Spencer and take the belt, but expect it to go the full 10 rounds.</p>