Updated: June 9, 2026
A Texas jury has convicted 19-year-old Karmelo Anthony of murder in the fatal stabbing of 17-year-old athlete Austin Metcalf during a high school track meet, bringing one of the most closely watched criminal trials in the country to a dramatic conclusion.
The incident, which occurred during a rainy competition in Frisco, Texas, sparked national debate after Anthony claimed he acted in self-defense during a confrontation in the stadium bleachers. Prosecutors argued the stabbing was an unjustified attack, while defense attorneys maintained that Anthony reacted in fear after a physical altercation.
After hearing testimony from student witnesses and reviewing the circumstances surrounding the April 2025 incident, jurors rejected the self-defense argument and returned a guilty verdict. Anthony now faces the possibility of life imprisonment when he is sentenced.
The verdict highlights the legal challenges defendants face when claiming self-defense, particularly where prosecutors argue that the use of deadly force was disproportionate to the threat encountered.
Karmelo Anthony (left) was convicted of murder in the fatal stabbing of Austin Metcalf (right) during a high school track meet in Frisco, Texas.
Why the Jury Rejected the Self-Defense Claim
Anthony did not testify during the trial. Instead, jurors heard from multiple student witnesses who described a confrontation that began when Anthony remained under a tent being used by Austin Metcalf’s track team during a rain delay at a high school meet.
According to testimony presented at trial, Metcalf and other students asked Anthony to leave the area. Witnesses told jurors that the disagreement escalated before Anthony produced a knife and stabbed Metcalf in the chest.
Prosecutors argued that the evidence did not support a lawful self-defense claim and described the stabbing as an unnecessary use of deadly force. Defense attorneys contended that Anthony acted in a split second of fear after physical contact occurred between the two teenagers.
After deliberating, the jury sided with prosecutors and found Anthony guilty of murder.
What Happened at the Frisco Track Meet?
The fatal encounter occurred on April 2, 2025, during a track and field competition involving multiple high schools in the Frisco area.
Witnesses testified that tensions developed after Anthony sat beneath a tent assigned to Memorial High School athletes. Several students stated that Metcalf approached Anthony and told him he needed to leave.
Jurors heard evidence that a physical confrontation followed before Anthony pulled a knife from his bag and stabbed Metcalf. The 17-year-old athlete later died from his injuries.
The case attracted national attention throughout the investigation and trial, generating extensive media coverage and debate over self-defense laws, youth violence and the circumstances surrounding the fatal encounter.
Sentencing Could Bring Life in Prison
Anthony was charged with murder under Texas law and now faces sentencing following the conviction.
Prosecutors have not yet announced what sentence they will seek, but Anthony faces a potential punishment ranging up to life imprisonment.
The sentencing phase will determine how long Anthony remains incarcerated and will mark the final stage of a case that has drawn intense public scrutiny since Metcalf’s death more than a year ago.