# Late Cowboys' player Marshawn Kneeland diagnosed with CTE

> **Newsylist Open Intelligence Dossier** · First detected: 2026-07-07 16:29 UTC · Category: Sports · Sources: 18 · Current Velocity: 21.21

## Executive Summary
Former Dallas Cowboys defensive end Marshawn Kneeland has been diagnosed with Stage 1 CTE following his death in 2025.

## Intelligence Brief
Marshawn Kneeland, a former Dallas Cowboys player who died by suicide at age 24, was diagnosed with Chronic Traumatic Encephalopathy (CTE). The diagnosis was made by a doctor after his death in 2025.


Coverage from ESPN, USA Today, Bleacher Report, Us Weekly, and iHeart emphasizes that Kneeland was found to have Stage 1 CTE at the time of his death. Reports focus on the posthumous medical findings regarding the former athlete's brain health.

## Verified Facts & Key Claims
### What stage of CTE did Marshawn Kneeland have?
According to Us Weekly, Kneeland had Stage 1 CTE.

### How old was Kneeland when he died?
USA Today reports that Kneeland died at 24.

### When did Marshawn Kneeland die?
Bleacher Report states that Kneeland died in 2025.

## Key People, Organizations & Locations
CTE, Late Cowboys, Marshawn Kneeland, Late Dallas Cowboys Star Marshawn Kneeland Had Stage, CTE When He Died By Suicide, Cowboys Kneeland Had CTE At Time Of Death, Former Cowboys DE Marshawn Kneeland Diagnosed, Doctor Following His Death

## Multi-Source Evidence Table
| Source Outlet | Headline | Published (UTC) | Verification URL |
|---|---|---|---|
| Fox News | Former Cowboys defender Marshawn Kneeland, who died by suicide at 24, found to have early stage CTE | 2026-07-07 15:24 | [Source Link](https://news.google.com/rss/articles/CBMirwFBVV95cUxOaEVaT1dwb2VueXJlbjdaZVFDTml6QWdVMWhiSndsVzBuR1ZGeWVwellUaDBKUFhhb0ZaZ0Job0kzbEJJaWdkRjN4d2w5WkJhSmVhT3h5a1NGZ0dVQXJXYXgwS2t0Nm1zbWhhZ2pEM3d1c2pWNXZKR3d1QU1TVHNHZ09UV05RdVcwZC1DeXBQX2Q5cjdZM1Z0X1YyVlFDbk5ZR3NCS3pWby1iSEo1SlM00gG0AUFVX3lxTFB0Snd2RE1RSFJqN2ZtVXB1SFoxU0tvYlRtaEtxRUV4WWhNclotNVZuVHpZR3lmUmF5ZzlVVmpHUE9RazRCTDNSOFFCUzIwVlRqdmw5bGdBcUx1MHVvVWRicW1XNGZxS0pvdHlFZ2hxY2NBR1k4bkVMc1k4eTBMVWJGU2NUZlk3b0Q0OHJUR2NvYlVTbVFMOUdRd3FJLXVRdTJCckp) |
| HowStuffWorks | Why Does CTE Affect So Many Football Players? | 2026-07-07 15:24 | [Source Link](https://news.google.com/rss/articles/CBMibEFVX3lxTE1iZjRkX05JZ295a3pUTkFiNlhNVnlMUHZwWkZSQW9NSzZIZVJwNndodm9pNlB0SHpuUV9Sa1hucS1icVhpWWJrbVJERHRTTFVJV1RoWlZsZFNXcVlyQklnQVlCaS1WbmlwUUw1Qg?oc=5) |
| Dallas News | Dallas Cowboy Marshawn Kneeland’s tragic diagnosis is a warning | 2026-07-07 15:24 | [Source Link](https://news.google.com/rss/articles/CBMiswFBVV95cUxOVU1jcmxfd2VEMnJ0RHlJVDU2SFkyNzNhX0pnQ0xMQkdFb2VManhyMmtwajltZGJqcE5mcHBzMXRYekZLNk81NGhzZ3ZmTkhubWhhMjU5cHZ6aXd2X2xjcG1feGZ5SUFwNVhnNm5lc2FDQzBFZ3lsM2hyalNxUXF3TU5OMEFucXZNUTUxZDdQWjA4VW9RdFNZMjVIVi1BT2lkbUp6aVNzWVh6TFBGdXJtWEh5RQ?oc=5) |
| USA Today | NFL's Marshawn Kneeland had CTE at 24. Alarming statistic shows that's not rare | 2026-07-07 15:24 | [Source Link](https://news.google.com/rss/articles/CBMiowFBVV95cUxPNDFERnVwUWhuaUNnOGhDbWx6clp0ZkRyTkZ6ckExVlBYM3ppdlhYNC1tZFFzNzd3MzRZM3ZCbVpaRTdSeVhqTDFJLW95ZVloR3VYSjJQci1udWd6R3kxSDdDY1BBekZuTWpMeTh1Y05uZlJHeVNNV19YMzNjMnQ0d2VIUDhJQ3NWUU1jYUJDRl9ocTZxWnBsTDRfWG04YTNnRGNj?oc=5) |
| CBS Sports | Former Cowboys edge rusher Marshawn Kneeland diagnosed with CTE after death at age 24 | 2026-07-07 15:24 | [Source Link](https://news.google.com/rss/articles/CBMihgFBVV95cUxQMThrcVhjQTl1bjJEdjV3TDlNZ0tPRDdpdl91bW9TVUdJbWNyUGhpYXhoMWFCTF9Rd3ZaRzAzVHVGMHZuZ1lJLWpObzl1bXpuSlh1WGVmdnJ3eE5waU5UekRxdGkwVGFYQjRuckJ3dU11czdLOGlDQWhoRERCWnZKOWJWOXAwdw?oc=5) |
| The Guardian | Former Cowboys defensive end Marshawn Kneeland had early stage CTE when he died at 24 | 2026-07-07 15:24 | [Source Link](https://news.google.com/rss/articles/CBMifkFVX3lxTE9sTHR5NFNVOEpyOHIwTXA3VHlPY19kSEpCZ3RCZ3oyaWwyenJEbFJoZmZCWmVGam1XM0pVMUpZVEhzWDJsaFFrMFBjb2RaNTA2WUxYNUVJZTZnam9LWThFYTVjU2l6d1V1NVJwcm5jdU91X09CVWtCOGh2blBjUQ?oc=5) |
| Syracuse.com | Cowboys player who died by suicide at 24 diagnosed with CTE posthumously | 2026-07-07 15:24 | [Source Link](https://news.google.com/rss/articles/CBMiuAFBVV95cUxOTHlQYjN4bEdnSGhlMG9UeXFqRmRxZ0FRdHp3WV9JWmxqTjBIMjhCTUNIMVB3Wkp0aUp3M3BHOENmWEV4RDFuMHB1alo1aWJGYmlpZHdMSVhqdWxVUDV2cVBZWTJXQ28weW1uLTk1RDN1Tno2Y3dQWDlwN3pTcVFsLVkzVkd0N21peUJodmw2eGc2YzZmYk52WExYWW1MdmEtbVpHSEtKMUlYR3BqMzlLdS1GallSQmNY?oc=5) |
| RTE.ie | NFL star Marshawn Kneeland posthumously diagnosed with CTE | 2026-07-07 15:24 | [Source Link](https://news.google.com/rss/articles/CBMipAFBVV95cUxNUVFmZHFZUmtKbWhWN0t4SDFRWGVyVzN2ZVdkbXVRaXFETVNMY0xhcjdfQXNzamloZ2RMVXIxVzd2V0tyYlU5UF9RSVZGLTdEZ2NibTl1d2dCcTU4VV9tSEpHQ25kVmdmQzQzcDQxeXFtaG1oa0g0NDZFREI2R0dCcjd3ZnpuMktXUjdSdGc3S2lnb2k5aHh1NWt1U0daeWVycFlVaw?oc=5) |
| MLive.com | Ex-WMU star, NFL player Marshawn Kneeland diagnosed with CTE after posthumous brain study | 2026-07-07 15:24 | [Source Link](https://news.google.com/rss/articles/CBMiywFBVV95cUxOWlN0Mm1rWFlXYUQ1OTJ5M094bVZwR1Z0emdreUZET2pIajNDSnhYd1MxQlZualU2QnBzR09UX3BrQks1ZUxmQjljUDF6RnE2UjRnTVp0NURCSFFyQS1BcjJCTDgxOFMyeWk5NXktSUJUb1Z0dkdIX1BUZS1TQ19od0pjYkYyX3Q1Z2ZwVHZtTHloWVZmZDNlT2paelFPV1Nyd0haV0tDVU1lMjJYZEhNYjVPMlBFM1hBWWhYYzhrUlJyU3hoQldTbUFVSQ?oc=5) |
| People.com | Marshawn Kneeland’s Cause of Death Revealed, Dallas Cowboys Player Was 24 | 2026-07-07 15:24 | [Source Link](https://news.google.com/rss/articles/CBMinwFBVV95cUxNZ2hPWm52Q0RCVkVOMXZvNzlqU0x4emNtVGY0UVR3aVM3R0M1MkNTenFFeWdYTmctazRYMHRSRW8xMmVvdEs2RXg3T1JqOHV6YkxCZEFocXMtMzhtbDViMEVPaG9EQVZYUFhjZENpcEhtbVF3b2ZOM2VPaFRYYkR2LTlmSkU0MWVsem1aQU0yWUtPMHFGeEk5eVdOdy1aUm8?oc=5) |
| NBC News | Former Dallas Cowboys player Marshawn Kneeland had CTE when he died | 2026-07-07 15:24 | [Source Link](https://news.google.com/rss/articles/CBMiqgFBVV95cUxQTURsY1pway14TzlUc1hCOHV2eTNxNG9tcjRJMDdMNlNTNkRZN3Y4VElOazJNbnJMaExKY19aX0V5N3lYalliNGE1RVB2UjFYLWxYUTdTU01vSkdHaEVIdkliN0VmbUdGZTRPeW1fdmNpcFI4d3E3YTVYMXl1QU8wMmhaYjF3TlY1NWZRNDVVdk5oYkRscEFDUkJCWDNNYk9PTS1ZVW5iVVpzdw?oc=5) |
| NBC Sports | Marshawn Kneeland had stage 1 CTE | 2026-07-07 15:24 | [Source Link](https://news.google.com/rss/articles/CBMimwFBVV95cUxPeTBoSmlOdVU3Y2tfVDNuWXhXdGZTdUhCdEllMmY2VnhQZXRWTWF4eUhQbUxSSmZDYnh2dzVwcGdidkI5NFJ2TEFGcTdjS1hhc3pxcnlGem00SDNHYzlNZ2ZwcUJPMkdGMy1SWVVYMnYyT1dkd1BLb2FfZXNqbUhvMXZiNjRrOEdJZDhjMVp2amFINUdUeHBEYlFhYw?oc=5) |
| Dallas News | Former Cowboy Marshawn Kneeland had stage 1 CTE when he died by suicide, foundation finds | 2026-07-07 15:24 | [Source Link](https://news.google.com/rss/articles/CBMijAFBVV95cUxNSFgxTG9vREN5QkR3WWd0TDRWRDZya1p3VTlMT0FvVTkyZ0Jobjh1ZkFPcnlIeFZUYkZOc1lZZEZ3SkNEUVdwSmJFbElXczFrWGtZcFVSR0Yta0didUZHZzEyT090OGNzQ3pOZ19vaG4yY09ua0VTeUcwczdLOFBLQUtaREROT1dSdUpTWQ?oc=5) |
| The New York Times | Marshawn Kneeland diagnosed with CTE months after death by suicide | 2026-07-07 15:24 | [Source Link](https://news.google.com/rss/articles/CBMilwFBVV95cUxPWTlabFdVOU5tcG5uaWRCT3NWRjlvX1VkaklKTVFxR2RtN2pWX0hyV2JlVi1fQTJRcF8xZktPM1RsRG55c3hFZ3Y5Mk9KZ2stclNtWnpqNW0tdDlWRUpGTGNDTWVOT1BRZUV1SVZKaEo1ZjBRWnJ0Tjc3SEFoMk5FME5aX1FtNk1PVmh1cWVaYjdaMl9sYjVr?oc=5) |
| SFGATE | Former Dallas Cowboys defensive end Kneeland had early stage CTE at time of death | 2026-07-07 15:24 | [Source Link](https://news.google.com/rss/articles/CBMioAFBVV95cUxOdEh5NmdEWEZJczBJMnpPTzBVNVNCQm9jNG51OTczc2hKMENLZ044TVl2UGhlTnhMWXNNZTMtRURqT2lqNGtITkdtalVjeVJwTEhMTE9uT2J0V2swVzhwRDlwRGhyZXFNdTlOZEVnSFFKV24tQlBCSmRXLXlzOHlPb3dnM2FXTzlBaHU5NVM0ZFB1NHNoTlI1NEtXRzZDc1hv?oc=5) |

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*Canonical Source: https://www.newsylist.com/trend/2026-07-07/late-cowboys-player-marshawn-kneeland-diagnosed-with-cte*
*Synthesized by Newsylist Open Intelligence Engine under E-E-A-T journalistic standards.*