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History · 2021 · Khaos Williams vs Matthew Semelsberger
From the tape · 19 Jun 2021

Khaos Williams vs Matthew Semelsberger

Result

Khaos Williams beat Matthew Semelsberger

Method
Decision - Unanimous
Round
3 of 3
Clock
5:00
Welterweight

We published no prediction for this bout. Everything on this page is the official record and the tape it was fought on — the result, the round-by-round counts, the judges’ cards where they exist and the sportsbook line where one was published. Our graded calls start in 2026 and live on the public record.

Red corner KhaosWilliams“The OxFighter”
VSOn the tape
Blue corner MatthewSemelsberger“Semi The Jedi”Frederick, Maryland
Welterweight3 rounds19 Jun 2021
The story going in
  • Lands 1.2 more significant strikes a minute than Semelsberger.
  • Comes in on a 2-fight win streak.
  • Carries 13 points more striking defence than Williams.
16-5
Record
11-8
−1 yr27
Age
28
6' 0"
Height
+1″6' 1"
+2″77″
Reach
75″
Orthodox
Stance
Switch
+13
UFC bouts
2
2/2100% of wins
Finishes
1/250% of wins
Vitals, record, nickname and camp come from the public UFC fighter register and are current, not a snapshot of fight night. UFC bouts, finish rate and every storyline line are counted off the official UFC fight record. A tick marks the side holding the raw edge in that row — longer reach, taller, younger, more bouts, a higher finish rate. It is a fact about the tape, not a prediction, and rows with no clean comparison (record, stance, gym, hometown) carry no tick at all. Any row we cannot fill on both sides is left out rather than half-drawn. Streaks, bout counts and finish rates are as they stood going into this fight — this bout and everything after it is excluded from the count.

Round by round

Every round the fight went, shaded by where the significant strikes actually landed — and the takedowns, control time and knockdowns beside them.

No round-by-round tape on file

UFCStats has no per-round record for this bout, so there is no timeline to draw. The result and the finish above are unaffected — this is a hole in the round-by-round tape, and we will not fill it in from the fight totals.

Judges’ scorecards

The judges’ totals, the media’s cards beside them, and how these judges usually score.

No scorecard record on file

We could not join this bout to a scoring record, so nothing is shown here. That is a gap in the source data, not a card we are withholding.

Takedowns

Takedowns

The level change — head to head

Career UFC takedown rates. Red corner left, blue corner right.

Khaos Williams

0.00takedowns / 15 min
0.00 / 15m
TAKEDOWNS
1.01 / 15m
n/a
ATTEMPTS
1.77 / 15m
n/a
ACCURACY
57%
0.00 / 15m
SUB ATT
0.40 / 15m

Matthew Semelsberger

1.01takedowns / 15 min

Career UFC takedown rates exactly as UFCStats publishes them: takedowns landed per 15 minutes, completion rate, submission attempts per 15 minutes, and the share of takedowns tried on them that they stuffed. Attempts per 15 is the one derived figure — landed ÷ completion rate — and it is omitted wherever either input is missing. UFCStats writes 0% where no attempt was recorded at all, so a percentage of exactly zero reads “n/a” here rather than as a measured rate. “Field” is the average fighter in that weight class, or across every division where a class is too small to average. Rate bars run to the population’s 95th percentile (4.97 takedowns / 15m); a fighter above it pins the bar. Percentages are drawn on their own axis.

Ranked in Welterweight

The market story

Where the price started and where it finished — the sportsbook consensus, with the vig removed. We captured no price series for this bout, so there is no chart to draw.

Khaos Williams↑ +0.9pp
open 58.0%close 58.9%
Matthew Semelsberger↓ −0.9pp
open 42.0%close 41.1%
0%50%100%
OpenClosing consensus (BFO, vig removed)

Khaos Williams opened at 58.0% and closed at 58.9% (+0.9pp), with Matthew Semelsberger moving the other way by the same amount — the two are one de-vigged pair, so they always sum to 100%. There is no line between those two points because nobody recorded one: we hold the open and the close for this bout, not the days in between.

Show the numbers
CornerOpen (US)Close (US)Open %Close %Move
Khaos Williams-150-16158.0%58.9%+0.9pp
Matthew Semelsberger13013242.0%41.1%−0.9pp
Opening and closing moneylines from BestFightOdds (data/refs/bfo_fighter_moneylines.csv), one row per fighter per bout, de-vigged pairwise so the two corners sum to 100% · scraped 2026-06-10. No price series was captured for this bout, so no line is drawn between the two points.
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