Ketlen Vieira vs.
Macy Chiasson
Two full careers, measured against each man's own division and against each other — the tape, the read, and every number behind them.
The men, measured.
Frame, age, layoff and recent form — green marks the edge on each line.
What the numbers say.
Scouting notes, auto-generated — only stats deviating more than 25% from the division median make this list. No narratives, just deviations.
Who did they actually beat?
Full-career records re-graded by the tier of opposition — the same grading the Contender Series pick model uses. Records built on tier-4 competition are worth less than records built on killers.
Ketlen Vieira
| Competition tier | W | L |
|---|---|---|
| Tier 1 — UFC / DWCS / PFL / Bellator / ONE / Rizin | 10 | 5 |
| Tier 3 — regional circuit | 6 | 0 |
Tier-weighted record quality: 1.27 · 10 tier-1/2 wins · 6 finish wins over 21 documented bouts
In the UFC: 8-5 against opponents who walked in above .500 · avg opponent walk-in record +2.3 wins over .500
Macy Chiasson
| Competition tier | W | L |
|---|---|---|
| Tier 1 — UFC / DWCS / PFL / Bellator / ONE / Rizin | 8 | 6 |
| Tier 3 — regional circuit | 2 | 0 |
Tier-weighted record quality: 1.13 · 8 tier-1/2 wins · 6 finish wins over 16 documented bouts
In the UFC: 3-5 against opponents who walked in above .500 · avg opponent walk-in record +1.3 wins over .500
The stand-up battle.
Career totals; norms are the medians of each man's own division.
Significant strikes — landed & absorbed
Where the fight happens (share of sig. strike attempts)
Ketlen Vieira
Distance 89.0% (norm 80.3%) · Clinch 8.0% (norm 9.7%) · Ground 3.0% (norm 7.5%)
Macy Chiasson
Distance 65.0% (norm 80.3%) · Clinch 18.5% (norm 9.7%) · Ground 16.4% (norm 7.5%)
What they throw (share of sig. strike attempts by target)
Ketlen Vieira
Head 87.5% (norm 75.2%) · Body 8.2% (norm 14.3%) · Legs 4.3% (norm 8.8%)
Macy Chiasson
Head 72.3% (norm 75.2%) · Body 21.7% (norm 14.3%) · Legs 6.0% (norm 8.8%)
Zone accuracy matrix Landed / attempted by zone
Green ≥ division median, red below. UFCStats tracks position and target as separate splits.
| Zone | Vieira L/A | Acc | Women's Bantamweight med | Chiasson L/A | Acc | Women's Bantamweight med |
|---|---|---|---|---|---|---|
| BY POSITION | ||||||
| At distance | 483 / 1376 | 35.1% | 38.3% | 237 / 692 | 34.2% | 38.3% |
| In the clinch | 99 / 123 | 80.5% | 73.3% | 150 / 197 | 76.1% | 73.3% |
| On the ground | 39 / 47 | 83.0% | 70.8% | 103 / 175 | 58.9% | 70.8% |
| BY TARGET | ||||||
| To the head | 474 / 1352 | 35.1% | 37.7% | 268 / 769 | 34.9% | 37.7% |
| To the body | 88 / 127 | 69.3% | 70.0% | 173 / 231 | 74.9% | 70.0% |
| To the legs | 59 / 67 | 88.1% | 80.9% | 49 / 64 | 76.6% | 80.9% |
Zones with fewer than 25 attempts are marked "too few to rate". Each fighter is measured against the median of leaderboard-eligible fighters in his own division (Women's Bantamweight: 40 fighters · Women's Bantamweight: 40 fighters).
What lands on them Opponents' accuracy against each man
Green ≤ division median — harder to hit than the typical man in his division.
| Zone | vs Vieira L/A | Opp acc | Women's Bantamweight med | vs Chiasson L/A | Opp acc | Women's Bantamweight med |
|---|---|---|---|---|---|---|
| BY POSITION | ||||||
| At distance | 615 / 1400 | 43.9% | 41.3% | 233 / 519 | 44.9% | 41.3% |
| In the clinch | 154 / 192 | 80.2% | 74.7% | 135 / 178 | 75.8% | 74.7% |
| On the ground | 86 / 136 | 63.2% | 74.2% | 53 / 67 | 79.1% | 74.2% |
| BY TARGET | ||||||
| To the head | 371 / 1128 | 32.9% | 38.1% | 255 / 544 | 46.9% | 38.1% |
| To the body | 292 / 391 | 74.7% | 73.2% | 127 / 170 | 74.7% | 73.2% |
| To the legs | 192 / 209 | 91.9% | 80.9% | 39 / 50 | 78.0% | 80.9% |
The ground war.
Takedowns, control and submissions — career totals with each man's per-minute rates against his division norm.
Bars compare the two men's rates (per-minute / per-15 figures), not raw totals — Vieira has more cage time on record.