Twenty-one witnesses testified under oath that 18-year-old Karmelo Anthony instigated a fatal stabbing attack at a high school track meet, directly contradicting his self-defense claims as prosecutors closed their case in the murder trial of 16-year-old Austin Metcalf.

Track Star Killed At Championship Event

Austin Metcalf, a junior track and football star at Frisco Memorial High School, died in April 2025 after being stabbed during a championship track meet at Kuykendall Stadium in Frisco, Texas. The attack occurred in broad daylight at a school-sanctioned event. Metcalf died in his twin brother Hunter’s arms. Anthony, then 17 years old and a student at rival Frisco Centennial High School, was charged with first-degree murder and faces between 5 and 99 years in prison.

The prosecution called current and former student athletes who witnessed the fatal stabbing to testify about what they saw that day. Fox News reporter Brooke Taylor documented key testimony where a prosecutor asked a witness if Austin appeared to be looking for a fight. The witness responded no. When asked if Karmelo appeared to be looking for a fight, the witness said yes. The witness also stated the incident did not look like self-defense.

Defense Supporters Contradict Testimony

Outside the Collin County courthouse, Anthony supporters insisted Metcalf started the confrontation and claimed the stabbing was justified self-defense. One supporter told reporters that Anthony was not an aggressor and was minding his business when other students approached him. However, every witness who testified under oath contradicted this narrative, stating Anthony should not have been in the same tent as Metcalf and that Anthony clearly acted as the aggressor throughout the confrontation.

State Rests After Witness Testimony

The prosecution rested its case Saturday after presenting testimony from 21 witnesses over multiple days of proceedings. Student witnesses consistently testified that Anthony initiated the confrontation and that Metcalf did not provoke the attack. The defense will now present its case as the trial continues. The murder charge carries a potential sentence ranging from five years to 99 years in prison if Anthony is convicted. The case has drawn significant attention as it involves the death of a promising young athlete at what should have been a celebration of high school sports achievement.