Karmelo Anthony defense, prosecutors wage first-impression war as emotions rock opening of trial: expert

FRISCO, Texas — The murder trial of Karmelo Anthony began Thursday in Collin County, with jurors hearing emotional testimony, watching surveillance footage, and listening to a frantic 911 call in the moments after Austin Metcalf was stabbed to death at a high school track meet.

Anthony, 19, has pleaded not guilty to murder, maintaining that he acted in self-defense when he killed Metcalf during what began as a dispute over a team tent. The case has drawn national attention since the April 2025 stabbing at Kuykendall Stadium.

The first day of testimony centered on the central question jurors must resolve: whether Anthony's actions constitute criminal murder or legally justified self-defense.

"The defense is accepting part of the burden here because if they want the jury instructed on self-defense, they have to prove up that split-second statement," said Texas legal analyst Jeremy Rosenthal.

Rosenthal noted that trial studies suggest most jurors form opinions early. "Eighty percent of jurors make up their mind at opening statement and they never change it," he said.

Jury selection concluded Wednesday with no Black jurors seated, a fact that has contributed to the intense public scrutiny surrounding the case.

Tensions erupted outside the courthouse Thursday as supporters of both Anthony and Metcalf's family gathered, shouting and displaying signs. The heated exchanges underscored the deeply polarized community response to the killing.

The Evidence

Jurors viewed surveillance footage from multiple cameras around the stadium and later heard a 7-minute 911 call placed after the stabbing. In the recording, background voices could be heard urging Metcalf to keep fighting. One person said, "There's a lot of blood. He's not breathing." Metcalf's final gasps for air were audible on the call.

As the recording played, Metcalf's family wept. Anthony sat with his eyes closed for most of it.

Rosenthal said video evidence has become expected in modern trials. "In the 21st century, I think jurors really expect there to be some type of video evidence, either surveillance or cell phone," he said. "You've got a bunch of teenagers and nobody seems to have any cellphone video of this, which is in some ways surprising. A picture's worth a thousand words."

The state later introduced a blood-stained jacket that Army veteran and football coach Joshua Rebmann used while attempting to stop Metcalf's bleeding. On the 911 call, Rebmann was heard pleading with the dying teen. "Stay with me, Austin. Come on, Austin," he said repeatedly.

Emotional Testimony

Memorial High School athletic trainer Tiffany Whiteaker testified she was working at the track meet when she heard screaming in the stands. A student ran up to her saying, "He stabbed him and threw the knife in the stands," pointing at Anthony.

Whiteaker positioned herself in front of Anthony and instructed Heritage High School coach Vincent Hooper to prevent him from leaving. She then performed CPR and used an automated external defibrillator until paramedics arrived. Metcalf was taken to the hospital, where he later died.

Robert Starr, the Memorial High School track coach, became emotional while describing finding Metcalf wounded. "You just don't go into someone else's tent uninvited," Starr testified, referring to the team tents at track meets.

Hooper told jurors that Anthony made a chilling admission when confronted after the stabbing. "He put his hands on me. I stabbed him," Anthony told him, according to Hooper.

When Hooper warned Anthony that if Metcalf died, he would have changed his life forever, Anthony reportedly replied, "He won't die."

Competing Narratives

In his opening statement, Collin County prosecutor Bill Wirskyke called the killing a "provoked, unjustified murder" and directly addressed the racial tensions surrounding the case. "This case has nothing to do with race. This case is not self-defense," he told jurors.

Defense attorney Mike Howard countered by urging jurors to consider the chaos of the moment. He described Anthony's actions as a "split second of fear and chaos" and asked that they focus on the evidence rather than the public narrative that has developed around the case.

Testimony is expected to continue Friday as prosecutors build their case and the defense prepares to present its self-defense claim.

Rosenthal said consistency among witnesses will be crucial. "I sort of view this case like a rock thrown into a pond," he explained. "You've got the epicenter, and then you've got all the ripples out. What's going to be interesting is, what's the one person who gets up there and goes against the grain and says something that nobody else has said?"