Eichenberg grew up in Cleveland, Ohio and attended Saint Ignatius High School.

[5] Eichenberg redshirted his true freshman year after playing in four games.

Eichenberg was named a starter at linebacker entering his junior year.

[7] Eichenberg was named the defensive MVP of the 2022 Rose Bowl after making 17 total tackles as Ohio State beat Utah 48–45.

[8][9] Eichenberg was selected with the 148th overall pick in the 2024 NFL draft by the Las Vegas Raiders.