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Kill The Body

and the head will die

Mary Spencer vs Mikaela Mayer — record, stats and common opponents compared

🇨🇦SUPER WELTERWEIGHT

Mary Spencer

Cross-division

🇺🇸WELTERWEIGHT

Mikaela Mayer

Mary Spencer (10-4) and Mikaela Mayer (22-3) are compared on record, finishing method, activity, and common opponents on Kill The Body. The two have met once. They share no common opponents in Kill The Body's bout data.

Spencer

10

Wins6 KO · 60%

4

Losses

0

Draws14 tracked bouts

Mayer

22

Wins5 KO · 23%

3

Losses

0

Draws25 tracked bouts

Head to Head

Mayer leads 1–0

Mary Spencer and Mikaela Mayer have met 1 time; Mayer leads 1–0.

Mary Spencer and Mikaela Mayer have met 1 time; Mayer leads 1–0.
Met2025Oct 30Series
Mary SpencerFighter ALLost0–1W–L
Mikaela MayerFighter BWWon1–0W–L
ResultUD1Meeting

The Numbers

Spencer 4 · Mayer 3 of 7 measurable rows
SpencerMayer
Record
10-422-3 (edge)
Win %0–100%
71.4%
88% (edge)
Wins by knockoutmax 6
6 (edge)
5
KO rate0–100%
60% (edge)
22.73%
Stoppage rate (tracked wins)†0–100%
60% (edge)
23%
Times stopped†levelmax 0
0
0
Title reignsmax 7
2
7 (edge)
Bouts per year‡max 2.9
2.9 (edge)
2.8
Bouts trackedcoveragemax 25
14
25

† Counted from bouts Kill The Body has ingested, not a career total. · ‡ Across each fighter's tracked career span. · Bars are scaled per row — percentages on 0–100, counts against the larger of the two. Every figure is also printed as text.

Tale of the Tape

Height+2″
Mary Spencer: 5′11″ (edge)
Mikaela Mayer: 5′9″
Reachnot held
Mary Spencer: No reach on file
Mikaela Mayer: 67″
Age5 yrs apart
Mary Spencer: 41
Mikaela Mayer: 36
Stance
Mary Spencer: Orthodox
Mikaela Mayer: Orthodox

Mary Spencer left, Mikaela Mayer right, as everywhere on this page. Age is stated, not scored — neither age nor stance carries an edge.

Super Welterweight against Welterweight. The two are listed in different weight classes, so the tape measures them as they stand rather than as a matchup.

How They Win

Tracked bouts only
Mary Spencer10 wins · from 14 tracked bouts

Mary Spencer: 10 tracked wins — 6 by KO/TKO (60%) and 4 on the cards (40%). Counted from 14 bouts Kill The Body has ingested.

6 by KO/TKO 60%4 on the cards 40%

Mikaela Mayer22 wins · from 25 tracked bouts

Mikaela Mayer: 22 tracked wins — 5 by KO/TKO (23%) and 17 on the cards (77%). Counted from 25 bouts Kill The Body has ingested.

5 by KO/TKO 23%17 on the cards 77%

One square per tracked win. Counted from the bouts Kill The Body has ingested for each fighter — Mary Spencer 14, Mikaela Mayer 25 — not from a career-complete method table.

Common Opponents

No opponents in common across the bouts Kill The Body has tracked for these two.

Current Form

Oldest left · newest right

Mary Spencer has lost two straight, after three straight wins. Spencer last boxed on May 30, 2026 — 146 days ago.WWWLL

Dreiling Jan 2024Mannes Sep 2024Suárez Apr 2025Mayer Oct 2025Robinson May 20262.9 tracked bouts per year

Mikaela Mayer had won three in a row before losing a decision to Chantelle Cameron. Mayer last boxed on Aug 29, 2026 — 55 days ago.LWWWL

Jonas Jan 2024Ryan Sep 2024Ryan Mar 2025Spencer Oct 2025Cameron Aug 20262.8 tracked bouts per year

Common Questions

With the rows behind them
Have Mary Spencer and Mikaela Mayer ever fought each other?
Yes. Mary Spencer and Mikaela Mayer met once on October 30, 2025, and Mikaela Mayer won by UD.
The meeting

LOct 30, 2025 · Mayer · UD

Head to Head ↓
Who has the better record, Spencer or Mayer?
Mary Spencer is 10-4 and Mikaela Mayer is 22-3. Mikaela Mayer has the higher win percentage.
Records · win %

Spencer10–471.4%

Mayer22–388%

The Numbers ↓
Who has more knockouts, Spencer or Mayer?
Mary Spencer has 6 knockout wins and Mikaela Mayer has 5. Mary Spencer has more.
Knockout wins · KO rate

Spencer660%

Mayer522.7%

The Numbers ↓
Do Spencer and Mayer have any common opponents?
Kill The Body's bout data shows no opponents that both Mary Spencer and Mikaela Mayer have faced.
Who is bigger, Spencer or Mayer?
Mary Spencer is the taller fighter at 180 cm, 5 cm above the other.
Height · reach

Spencer180 cm

Mayer175 cm169 cm reach

Tale of the Tape ↓
How much fight data does Kill The Body have on Spencer and Mayer?
This comparison is drawn from 14 bouts tracked for Mary Spencer and 25 bouts tracked for Mikaela Mayer. Method and activity splits reflect those bouts only.
Bouts tracked · no edge

Spencer14bouts

Mayer25bouts

How They Win ↓

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