Miller Gardner, the 14-year-old son of former NY Yankees player Brett Gardner, died from carbon monoxide poisoning during a family trip in Costa Rica. The boy fell ill alongside family members, and toxicology reports confirmed he had high levels of carboxyhemoglobin in his blood. The family suspects machinery from the resort caused the contamination. Miller was remembered as a vibrant and adventurous soul who loved sports. The baseball world shares in their grief as Brett Gardner's legacy lives on.