The loss of 14-year-old Miller Gardner, son of former New York Yankees player Brett Gardner, has been confirmed as a result of carbon monoxide poisoning. The tragedy unfolded last month while the family vacationed in Costa Rica.
Tragic Death of Brett Gardner's Son Determined to be Carbon Monoxide Poisoning

Tragic Death of Brett Gardner's Son Determined to be Carbon Monoxide Poisoning
Miller Gardner, the young son of the ex-Yankees player, tragically passed away during a family trip in Costa Rica, officials report.
In a shocking revelation, Costa Rican officials reported on Thursday that 14-year-old Miller Gardner, the son of ex-New York Yankees outfielder Brett Gardner, died from carbon monoxide poisoning last month during a family vacation. A post-mortem toxicology report revealed that Miller had a carboxyhemoglobin level of 64 percent—well above the lethal threshold of 50 percent—prompting the Costa Rica Judicial Investigation Agency to declare that the case could be considered closed.
Miller, along with other family members, fell ill while they were staying at a resort in Manuel Antonio. He died peacefully in his sleep on March 21, with local authorities confirming the family’s room was situated near machinery that potentially caused the carbon monoxide leak. Toxicology tests were conducted, confirming the absence of drugs, while the autopsy displayed clear signs of poisoning.
Brett Gardner, who dedicated his entire Major League Baseball career to the Yankees from 2008 to 2021, expressed devastation over the loss of his son, who cherished sports, particularly football, baseball, and golf. The family, comprising Brett, his wife Jessica, and their other son Hunter, aged 16, resides in South Carolina.
Miller, along with other family members, fell ill while they were staying at a resort in Manuel Antonio. He died peacefully in his sleep on March 21, with local authorities confirming the family’s room was situated near machinery that potentially caused the carbon monoxide leak. Toxicology tests were conducted, confirming the absence of drugs, while the autopsy displayed clear signs of poisoning.
Brett Gardner, who dedicated his entire Major League Baseball career to the Yankees from 2008 to 2021, expressed devastation over the loss of his son, who cherished sports, particularly football, baseball, and golf. The family, comprising Brett, his wife Jessica, and their other son Hunter, aged 16, resides in South Carolina.