[1] Gammelgaard got his official debut for Vejle on 22 October 2021 in a Danish Superliga game against Nordsjælland, where he came in from the bench to the last couple of minutes.
[2][3] On 26 January 2022 Vejle confirmed, that Gamelgaard had signed a new two-year deal running from the summer 2022, which also secured him a promotion to the first team squad.
[5] After a six-month break due to a foot injury, more precisely, a fatigue fracture, Gammelgaard made his comeback in a reserve team match on 2 October 2023.
[6] In pursuit of more playing time, on 31 January 2024, Gammelgaard was loaned to Danish 1st Division club Fredericia until the end of the season.
This biographical article related to association football in Denmark, about a midfielder, is a stub.