Compare Jiri Prochazka vs Ketlen Vieira — UFC matchup breakdown
Tale of the Tape
The biometric deltas where one side genuinely has an edge.
Activity & layoff
The recency dimension Tale of the Tape doesn't carry. How active each fighter has been, and how that compares to active peers in their division.
Division percentiles below rank both fighters against the Light Heavyweight roster (264 fighters). Jiri Prochazka fights at Light Heavyweight; Ketlen Vieira at Bantamweight — Ketlen Vieira’s percentiles are measured against a division they don’t compete in, so read them with that in mind.
Recent form
Last five pro bouts (non-UFC fights dashed + tagged), current trajectory, and the level of opposition going into this matchup.
Schedule Score
Who they've faced × what they've done. Composite + components compared head-to-head, percentile-ranked against every UFC fighter w/ ≥3 resolved bouts.
Per-tier records + bout-by-bout
| Tier | Jiri Prochazka | Ketlen Vieira |
|---|---|---|
| Champion | 2-3 | 2-2 |
| Top-5 | 4-0 | 2-3 |
| Top-15 | — | 4-0 |
| Cross-div ranked | — | 1-0 |
| Unproven | — | 1-0 |
- L vs Carlos Ulberg#394Apr 11, 2026 · Champion
- W vs Khalil Rountree Jr.#481Oct 4, 2025 · Top-5
- W vs Jamahal Hill#394Jan 18, 2025 · Champion
- L vs Alex PereiraCHAMP100Jun 29, 2024 · Champion
- W vs Aleksandar Rakic#584Apr 13, 2024 · Top-5
- L vs Alex Pereira#396Nov 11, 2023 · Champion
- W vs Glover TeixeiraCHAMP100Jun 11, 2022 · Champion
- W vs Dominick Reyes#388May 1, 2021 · Top-5
- W vs Volkan Oezdemir#782Jul 11, 2020 · Top-5
- W vs Jacqueline Cavalcanti#1168May 16, 2026 · Top-15
- L vs Norma Dumont#483Nov 1, 2025 · Top-5
- W vs Macy Chiasson45May 31, 2025 · Cross-div ranked
- L vs Kayla Harrison#394Oct 5, 2024 · Champion
- W vs Pannie Kianzad#774Jul 22, 2023 · Top-15
- L vs Raquel Pennington#592Jan 14, 2023 · Champion
- W vs Holly Holm#297May 21, 2022 · Champion
- W vs Miesha Tate#890Nov 20, 2021 · Champion
- L vs Yana Santos57Feb 20, 2021 · Top-5
- W vs Sijara Eubanks#1562Sep 26, 2020 · Top-15
- L vs Irene Aldana#1081Dec 14, 2019 · Top-5
- W vs Cat Zingano#685Mar 3, 2018 · Top-5
- W vs Sara McMann#681Sep 9, 2017 · Top-5
- W vs Ashlee Evans-Smith#1366Apr 15, 2017 · Top-15
- W vs Kelly Faszholz8Oct 1, 2016 · Unproven
All figures are 0–100 ratings (shown as %), not percentages of anything literal. Schedule strength = the average quality of every UFC opponent faced (win or lose). Win quality = the average quality of the opponents actually beaten. The composite Schedule Score combines schedule strength (65%) with win quality (35%). Per-bout opponent quality is scored on rank-at-time-of-fight (champion 100, ranks 1–5 = 90→78, ranks 6–15 = 75→60), with cross-division and P4P signals layered on, falling back to opponent UFC record-at-time for unranked opponents. For fighters with limited UFC experience the headline is held toward a rookie baseline, so debut / low-sample fighters read lower than established names. UFC ranking data is sparse before December 2018, so legacy-era fighters score from record-at-time when ranks are missing.
Career splits
Striking matchup
Each fighter's offense mapped against the other's defense — where one attacks meets where the other gets hit, across head, body, and leg. Per 15 minutes of UFC fight time.
Prochazka holds a decisive striking edge (+26).
Where Prochazka attacks (green = high volume) vs where Vieira gets hit (red = vulnerable) — Prochazka’s green zones meeting Vieira’s red zones are the openings.
- Head77%90th397
- Body16%72nd81
- Leg8%50th40
Color = division rank · green elite → red low · % = share of strikes
- Head43%69th371
- Body34%10th292
- Leg22%22nd192
Color = division rank · green elite → red low · % = share absorbed · partly opponent-dependent
- Standing78%402
- Clinch8%39
- Ground15%77
- Standing72%615
- Clinch18%154
- Ground10%86
Each lane: the attacker’s strike rate (offense) vs the other’s rate absorbed (defense), graded on the division. The bar leans toward whoever wins the exchange — longer + greener = a bigger, higher-quality edge.
Full breakdown — all zones, both views
| Zone | Fighter | Landed / 15 | Accuracy | Absorbed / 15 | Career landed |
|---|---|---|---|---|---|
| Head | Jiri Prochazka | top 10% of division53.9 | 51% | well below average51.6 | 397 |
| Head | Ketlen Vieira | around division average31.2 | 35% | above division average26.3 | 474 |
| Body | Jiri Prochazka | top 28% of division12.1 | 76% | well below average12.9 | 81 |
| Body | Ketlen Vieira | below division average6.5 | 69% | bottom of the division17.7 | 88 |
| Leg | Jiri Prochazka | around division average7.1 | 82% | below division average10.8 | 40 |
| Leg | Ketlen Vieira | below division average4.6 | 88% | well below average11.9 | 59 |
Per-15-minute rates are sourced from UFCStats fight totals across each fighter’s UFC career. Division percentile is computed against every UFC fighter who has competed in this weight class with at least two recorded bouts. Lower “absorbed” values are better — the percentile is inverted so “top of division” always means better outcome.
Grappling matchup
Takedowns, submission threat, and control. Per 15 minutes of UFC fight time, with takedown defense as a percentage of opponent attempts stopped.
Each metric graded on the division — the bar leans toward whoever wins that part of the grappling exchange (longer + greener = a bigger edge).
Vieira has the grappling edge (+19).
Full breakdown — career grappling totals
| Metric | Jiri Prochazka | Ketlen Vieira |
|---|---|---|
| Takedowns landed / 15career takedowns | 0.53 | 1.320 |
| Takedown accuracycareer landed / attempted | 60%3 / 5 | 43%20 / 47 |
| Takedown defensecareer stopped / faced | 68%13 / 19 | 90%36 / 40 |
| Submission attempts / 15career attempts | 0.21 | 0.58 |
| Control time / 15 (min)career total | 1.8 min11:14 | 4.7 min72:31 |
| Time controlled by opponent / 15 (min)career total | 1.8 min10:50 | 2.5 min37:28 |
All rates computed from UFCStats fight totals across each fighter’s UFC career. Takedown defense = opponent attempts stopped ÷ opponent total attempts. Control time figures are minutes the fighter spent in a dominant position per 15 minutes of fight time. Accuracy under 8 career attempts is shown raw and ungraded — too small a sample to rate against the division.
Finishing & durability
How often each fighter ends fights early — and how often they get put away. Outcomes view, not per-minute output.
When their fights end
every pro finish on the fight clockFinish & durability rates
Full professional career
Full method breakdown
| Outcome | Jiri Prochazka | Ketlen Vieira |
|---|---|---|
| Wins | ||
| by KO / TKO | 28(88%) | 2(13%) |
| by submission | 3(9%) | 4(25%) |
| by decision | 1(3%) | 10(63%) |
| Losses | ||
| by KO / TKO | 5(83%) | 1(20%) |
| by submission | 1(17%) | 0(0%) |
| by decision | 0(0%) | 4(80%) |
Full professional career method splits, graded against the full-pro division distribution. Career KO losses are the total — clean knockouts and cut/injury stoppages can’t be separated outside the UFC corpus. Finish-time pace is UFC-only.
KO history
UFC fights only — knockout power and chin durability, head-to-head, then when the last finish landed, and on whom.
- Last time KO'dvs Carlos Ulberg2 months agoUFC 327: Prochazka vs. Ulberg · Apr 11, 2026 · R1 · 3:45
- Last time submittedNever submitted in the UFC
- Last time KO'dvs Irene Aldana6y 6mo agoUFC 245: Usman vs. Covington · Dec 14, 2019 · R1 · 4:51
- Last time submittedNever submitted in the UFC
Pace & fade
How each fighter's work rate holds up as a fight wears on — round-by-round output (striking, takedown attempts, and control time combined), and whether they fade. The fade % compares round-3 output to round 1 over bouts that reached the third round.
Cardio edge to Prochazka: Prochazka builds (+50% per round through round 3) while Vieira holds steady (-2% per round through round 5). Within fights that reached round 3, Prochazka lifts to 317% of round-1 output by round 3, Vieira 91%.
Faded points are drawn from a single bout that reached that round, so they’re less reliable than the solid points averaged over many fights.
Rounds backed by fewer than 2 bouts are drawn smaller and dimmed with an n= count — a deep round seen in one or two fights is a thin sample, not a settled rate. Per-round bout counts are in the breakdown below.
Full per-round breakdown — both fighters
What drives the pace · per round
The composite output line above blends these three inputs. Splitting them out shows whether a fighter’s work rate is built on striking volume, takedown pressure, or top control — and which input fades.
| Round | Fighter | Output / min | Sig landed / min | Sig absorbed / min | TD att / min | Control | Bouts |
|---|---|---|---|---|---|---|---|
| R1 | Jiri Prochazka | 4.5 | 4.0 | 5.6 | 0.05 | 9% | 9 |
| R1 | Ketlen Vieira | 4.5 | 2.7 | 3.7 | 0.27 | 25% | 15 |
| R2 | Jiri Prochazka | 7.2 | 6.5 | 6.3 | 0.11 | 10% | 8 |
| R2 | Ketlen Vieira | 4.9 | 2.4 | 2.6 | 0.25 | 44% | 14 |
| R3 | Jiri Prochazka | 12.7 | 12.0 | 5.3 | 0.00 | 17% | 3 |
| R3 | Ketlen Vieira | 4.4 | 2.6 | 4.2 | 0.14 | 36% | 13 |
| R4 | Jiri Prochazka | 5.1 | 4.2 | 4.8 | 0.00 | 23% | 1 |
| R4 | Ketlen Vieira | 4.3 | 4.3 | 6.8 | 0.00 | 0% | 2 |
| R5 | Jiri Prochazka | 2.6 | 1.3 | 4.6 | 0.00 | 31% | 1 |
| R5 | Ketlen Vieira | 4.3 | 4.0 | 5.4 | 0.10 | 1% | 2 |
Output / minis the headline work rate — significant strikes landed, plus 3 per takedown attempt, plus one per 15 seconds of control — so a takedown-and-grind round isn’t scored as idle the way bare striking volume would. The remaining columns are its components. Per-round rates use UFCStats per-round data (available for ~95% of bouts since 2008). Each round’s rates are averaged only over bouts that reached that round, so the bout count shrinks as rounds deepen. The final round of a finished fight is pro-rated by its actual length — a 2:30 stoppage counts as 2.5 minutes, not five — so an early finish doesn’t distort the per-minute pace.