What We Know About Duarte’s Overtime Injury Against Yuri Simoes

Kaynan Duarte appeared to hurt his shoulder during an overtime scramble against Yuri Simoes at the 2026 ADCC Superfight, and the injury ended the match. Match reports describe the finish as an injury, although FloGrappling’s results list records it as a submission at 22:26. Yahoo Sports reported that Duarte appeared to injure his shoulder as Simoes scrambled.

No cited statement from Duarte, his representatives, ADCC or a treating clinician confirms the exact injury, its severity or a recovery timeline.

The short answer: Duarte was stopped by an apparent shoulder injury

The Superfight took place during the September 12–13, 2026 ADCC event at Tauron Arena in Krakow, Poland. A contemporary results recap listed Simoes as the winner by “injury default,” while FloGrappling’s results list shows “via submission” and adds that the result was “technically marked as a submission.” The recap records the event location, dates and injury-default result.

Both labels point to the same narrow conclusion: Duarte could not continue after an apparent shoulder injury, and Simoes received the victory.

“Shoulder injury” remains a reported description rather than a confirmed diagnosis.

A timestamped account of the overtime scramble

MMA Mania described a slow main event spent standing for more than 20 minutes, with Duarte penalized for passivity. Its account says the first scramble came only in overtime, that Duarte was hurt immediately in the exchange, and that he could not move his shoulder and tapped at once. FloGrappling’s results list the finish at 22:26. MMA Mania’s event report describes the scramble and the tap.

The reported sequence was:

1. The Superfight reached overtime without a scramble.
2. Simoes initiated the first scramble.
3. Duarte was hurt in the exchange.
4. He reacted immediately and tapped.
5. The match ended because Duarte could not continue.

The report that Duarte could not move his shoulder describes what observers saw at the event. It is not a clinical finding, and it does not prove the precise mechanism or identify any damaged structure.

How the result was recorded

A tap stops the action, but it does not automatically mean the opponent completed a submission. In this match, reports describe Duarte tapping because of the apparent injury rather than to a named hold.

The sources use different result labels—“submission” on FloGrappling’s results list and “injury default” on another recap—without attributing the finish to a specific technique. Neither account supports claiming that Simoes secured a shoulder lock or intentionally caused a particular medical injury.

Result detail	Reported outcome
Winner	Yuri Simoes
Method	Submission (FloGrappling results) or injury default
Timing	22:26, in overtime
Named submission hold	None reported

The distinction is important when describing the result: Simoes won the match, but the reports tie the finish to Duarte’s injury rather than a completed submission technique.

Confirmed match details versus unanswered medical questions

Any later primary or clinical update should supersede the preliminary third-party reporting summarized here.

Reported	Not confirmed
An apparent shoulder injury occurred during an overtime scramble	Which shoulder was affected
Duarte could not move the shoulder after the exchange	Formal diagnosis or injured structure
Duarte tapped immediately	Injury grade or severity
The injury ended the match	Imaging findings
No named submission hold was reported	Treatment or surgery status
Simoes received the victory	Rehabilitation plan or return date

Descriptions such as shoulder dislocation, shoulder separation, labral tear and rotator-cuff tear would go beyond the available evidence. The cited reports provide no imaging, examination findings or diagnosis that would justify using any of those terms.

There is similarly no supported timetable for Duarte’s return to training or competition.

For recreational grapplers watching the sequence, the useful boundary is simple: footage can show that an athlete reacted, tapped and stopped competing.

What the result meant for Simoes and Duarte

The injury result made Simoes the 2026 ADCC Superfight champion. FloGrappling also reported that the victory qualified him to face the winner of the 2028 Absolute Division. Duarte had reached the 2026 Superfight by winning the 2024 ADCC absolute division, according to the event recap cited above.

Duarte’s under-99 kg campaign was separate from the later Superfight. He earned silver after Luke Griffith defeated him by rear-naked choke in the divisional final; Duarte subsequently faced Simoes and suffered the reported shoulder injury during that match.

Nothing in the cited reporting establishes that the shoulder problem affected Duarte’s match with Griffith or that Duarte entered the Superfight with a pre-existing injury.

The supported account remains limited but clear: Duarte’s Superfight ended after an apparent shoulder injury during an overtime scramble, and Simoes won, with results listed as a submission or an injury default. The precise diagnosis, treatment and competitive impact beyond that match remain unknown pending a direct update from Duarte, his team or a qualified medical source.