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UFC 326: Holloway vs. Oliveira 2FeatherweightPrelims
JooSang Yoo
JooSang
Yoo
1-1UFC
32 yrsElo 1480*
VS
Gaston Bolanos
Gaston
Bolanos
1-3UFC
33 yrsElo 1459*
Who wins
Claude
62%
Bolanos
GPT
68%
Bolanos
Elo
53%
Yoo
1480 vs 1459
Tale of the tapeUFC averages
5'7" Height 5'7"
71" Reach 69"
Orthodox Stance Orthodox
6.36 Landed / min 3.88
4.99 Absorbed / minlower better 3.49
58% Strike accuracy 43%
56% Strike defense 49%
n/a Takedowns / 15 0.00
0% TD accuracy 0%
50% TD defense 50%
n/a Subs / 15 0.0
Small sample: JooSang Yoo, 2 UFC fights.
How it ends
Claude: KO/TKO 25%Claude: Submission 10%Claude: Decision 65%
65%Decision
Claude calls Decision
KO/TKO 25%Submission 10%Decision 65%
GPT: KO/TKO 58%GPT: Submission 4%GPT: Decision 38%
58%KO/TKO
GPT calls KO/TKO
KO/TKO 58%Submission 4%Decision 38%
Formnewest first
JooSang Yoo154 days out
L
Daniel Santos
KO/TKO Punch · 2025-10-04
W
Jeka Saragih
KO/TKO Punch · 2025-06-07
Gaston Bolanos308 days out
L
Quang Le
SUB Rear Naked Choke · 2025-05-03
L
win
· 2024-11-09
L
Marcus McGhee
KO/TKO · 2024-01-13
W
Aaron Phillips
U-DEC · 2023-04-15
Why
Claude
Gaston Bolanos
62% · Decision
  • Bolanos' UFC experience (3 fights) vs Yoo's debut creates significant cage-time advantage
  • Weight class move from 135 to 145 gives Bolanos better size parity and less draining cut
  • Bolanos' 49% striking defense and proven chin against UFC competition
  • Yoo's complete lack of UFC statistical data suggests regional-level competition
Write-up

While Yoo lacks UFC data, Bolanos brings proven octagon experience despite recent struggles. His 43% striking accuracy and 3.88 SLPM output, though modest, represents tested UFC-level skills. Bolanos' recent move from bantamweight to featherweight could benefit him size-wise. His 2-fight losing streak came against higher-level competition, and this appears to be a confidence-building matchup. Yoo's orthodox stance matches Bolanos', neutralizing any stance advantage.

GPT
Gaston Bolanos
68% · KO/TKO
  • Significant striking sample for Bolanos with positive differential and 43% accuracy
  • Specialist striking background and proven finishing power for Bolanos
  • Yoo's lack of UFC data and unproven durability against an elite striker
  • Bolanos' fights typically being high-variance but finish-prone striking contests
Write-up

Bolanos is a proven, high-level Muay Thai striker with solid UFC striking metrics (3.88 SLpM at 43% accuracy, positive differential) and respectable defensive numbers. Yoo is an unknown quantity at the UFC level with no statistical sample, making it unlikely he can out-strike or safely navigate Bolanos' explosive kicking and elbow game over three rounds. Unless Yoo brings a surprisingly strong wrestling/grappling threat, Bolanos' experience, shot selection, and power should create knockdown opportunities and a likely finish.