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JooSang Yoo
Featherweight · “Zombie Jr.”

JooSang Yoo

1-2-0
Striker Hard To Take Down
5'7"Height
71"Reach
OrthodoxStance
32Age
1KO wins
0Sub wins
100.0%Finish rate
6:56Avg fight

Skill profile

Rated 0–100 · where 138 MMA has read him, his grades and tags set each axis and the stats only nudge inside his band · stats alone where he is silent · the rim is reserved for specialists
Striking — Average, rated 59 of 100 · 138 MMA whiteboard: striking good · Sep 2026 · stats read 46 → nudged -4 inside the band · claims striking power +1, striking technique +2, kicking +1 (+6) Accuracy — Average, rated 46 of 100 · claims striking technique +2 (+4) Striking D — Below avg, rated 32 of 100 · stats only — nothing in his reads bears on this axis Durability — Weak, rated 23 of 100 · stats only — nothing in his reads bears on this axis Wrestling — Below avg, rated 26 of 100 · claims td offense -1 (-2) TD Defense — Average, rated 56 of 100 · claims td defense +1 (+2) Grappling — Below avg, rated 37 of 100 · 138 MMA whiteboard: grappling decent · Sep 2026 · stats read 28 → nudged -4 inside the band · claims ground and pound +2 (+2) Control — Below avg, rated 41 of 100 · claims ground and pound +2 (+3) Striking Accuracy Striking D Durability Wrestling TD Defense Grappling Control
striking good whiteboard
2 analyst reads graded this phase
  • good UFC 331 Full Card Preview & Predictions · September 16, 2026 · whiteboard watch ↗
  • good UFC 320 Full Analysis, Prediction & Breakdown · September 30, 2025 watch ↗
grappling decent whiteboard
3 analyst reads graded this phase
  • decent UFC 331 Full Card Preview & Predictions · September 16, 2026 · whiteboard watch ↗
  • decent UFC 320 Full Analysis, Prediction & Breakdown · September 30, 2025 watch ↗
  • decent UFC 316 Full Card Breakdown · June 3, 2025 watch ↗
wrestling not yet read
cardio not yet read
durability not yet read
striking good 2 reads · whiteboard
grappling decent 3 reads · whiteboard
wrestling not yet read
cardio not yet read
durability not yet read

138 MMA anchors Striking, Grappling · his tags and claims adjust Accuracy, Wrestling, TD Defense, Control · stats alone on Striking D, Durability.

Built on 20 minutes of tracked cage time across 3 statted fights — every axis is held down until there is more tape, so read this as a sketch rather than a verdict.

Striker average striking — rates 59 of 100 · 138 MMA whiteboard: striking good · Sep 2026
Hard To Take Down average td defense — rates 56 of 100 · claims td defense +1 (+2)
Career rates — the raw numbers behind the chart
Sig. strikes landed / min3.99
Sig. strikes absorbed / min4.76
Striking accuracy43.2%
Striking defense53.1%
Knockdowns / 15 min0.72
Takedowns / 15 min0.72
Takedown accuracy25.0%
Takedown defense66.7%
Sub attempts / 15 min0.0
Control time11.0%
Record vs .500+ opponents0-1

Insider info

3 analyst reads · 138 MMA · our paraphrase, never his words
vs Michael Aswell clear UFC 331 Full Card Preview & Predictions · September 16, 2026
strikinggood grapplingdecent

picks the man he can "count on" for volume

Called a precision striker who picks his shots rather than forcing volume, with a sharp calf kick and good body work, though not primarily a grappler. His takedown defense and ground-and-pound are both solid.

Strengthprecise, power shot selection
Strengthcalf kick
Strengthbody work
Strengthdecent takedown defense
Weaknessnot a first-instinct grappler
vs Daniel Santos lean UFC 320 Full Analysis, Prediction & Breakdown · September 30, 2025 · 1 read since
strikinggood grapplingdecent

Calls the matchup a genuinely hard one to score and admits he does not know Yoo's grappling level, before settling on him for eye-catching striking -- heavy hedging surrounds a pick he still names plainly.

An undefeated prospect read as a clean, good striker with a sniper-style shot-picking game, real power and a nasty calf kick, plus heavy ground-and-pound if the fight hits the floor. His grappling is left as a genuine unknown -- the analyst says there simply is not enough tape against high-level competition to grade it with confidence, beyond a decent takedown-defense read. The pick for him rests on expected eye-catching striking exchanges rather than a settled grappling case.

Strengthclean, accurate shot-picking striking
Strengthreal power
Strengthnasty calf kick
Strengthheavy ground-and-pound
Weaknessgrappling level against real competition is unproven
vs Jeka Saragih lean UFC 316 Full Card Breakdown · June 3, 2025 · 2 reads since
grapplingdecent

He admits he is less sure of this one than public opinion seems to be, flagging possible debut-fight nerves, yet still lands on Yoo.

Rated a strike-first fighter with a long, rangy, precise style, good shot selection, strong body work, plenty of power, and a nasty calf kick. He is explicitly expected to test the striking before any grappling, rather than rushing for takedowns as some expect. His grappling is a decent backup option, with heavy ground-and-pound if he gets on top and decent takedown defense he likely will not need. He is picked to win, with some hedging about debut nerves.

Strengthlong precise striking
Strengthbody work
Strengthpower
Strengthcalf kick
Strengthground-and-pound if on top

Striking trend

Sig. strikes/min, last 3 fights · green = win
June 7, 2025 vs Jeka Saragih — 12.86/min (W) — only 0.5 min of tape, so this rate reflects how fast the fight ended more than how he fought Jun '25 October 4, 2025 vs Daniel Santos — 5.79/min (L) Oct '25 September 19, 2026 vs Michael Aswell — 3.07/min (L) Sep '26

Fight history

3 UFC bouts · newest first · opponent records as of fight night
L Michael Aswell 1-3 walk-in Decision - Split · R3 5:00 — UFC 331: Van vs. Pantoja 2 · September 19, 2026
46/129Sig. strikes
70/145Absorbed
1/4Takedowns
2:18Control
0Knockdowns
0Sub attempts
L Daniel Santos 13-2 walk-in KO/TKO · R2 0:21 — UFC 320: Ankalaev vs. Pereira 2 · October 4, 2025
31/55Sig. strikes
27/62Absorbed
0/0Takedowns
0:00Control
0Knockdowns
0Sub attempts
W Jeka Saragih 14-4 walk-in KO/TKO · R1 0:28 — UFC 316: Dvalishvili vs. O'Malley 2 · June 7, 2025
6/8Sig. strikes
2/4Absorbed
0/0Takedowns
0:00Control
1Knockdowns
0Sub attempts

Walk-in records count UFC bouts in this database. For the pre-UFC career, see the record breakdown below or the Tapology button up top.

Record breakdown

UFC bouts in this database
1-2-0UFC record

Wins by method

KO/TKO 1
Submission 0
Decision 0
Other 0

Losses by method

KO/TKO 1
Submission 0
Decision 1
Other 0

Fights by organization

UFC 3

Showing UFC fights only — this fighter's full pre-UFC career hasn't been synced yet. It will fill in as the weekly career backfill reaches them.

Division context

vs. 134 qualified Featherweight fighters · tick = division mean
Striking volume /min 4.0 avg 3.6
Strikes absorbed /min 4.8 avg 3.6
Striking accuracy 43.2% avg 45.0%
Striking defense 53.1% avg 55.3%
Takedowns /15 min 0.7 avg 1.5
Takedown accuracy 25.0% avg 37.4%
Takedown defense 66.7% avg 60.2%
Sub attempts /15 min 0.0 avg 0.6
Control time 11.0% avg 20.1%
Finish rate 100.0% avg 44.2%

Headshot of JooSang Yoo by UFC · Official UFC athlete photo (copyright UFC; not freely licensed) · Wikimedia Commons · flattened onto dark background, cropped/resized