A resident of the Manahawkin section of Stafford Township, New Jersey, Gesicki was a 2014 graduate of Southern Regional High School, where he set school records in basketball scoring (1,866 points), football catches (103) and receiving yards (1,817) and volleyball blocks (519).

[3] Gesicki attended Southern Regional High School in Stafford Township, New Jersey, where he played football, basketball, and volleyball.

[4] He finished his career as the Rams' all-time leading receiver with 1,817 yards on 103 receptions, with 16 touchdown catches.

[16] In the Dolphins' 2018 season opener against the Tennessee Titans, Gesicki had a reception for 11 yards in his NFL debut.

[18] In Week 12 of the 2019 season, Gesicki recorded his first career receiving touchdown on a 11-yard reception from Ryan Fitzpatrick against the Cleveland Browns.

[30] On March 20, 2023, Gesicki signed with the New England Patriots on a one-year deal worth up to $9 million.