Zambian teenage Miguel Changa Chaiwa was a second half substitute in Young Boys’ 2-2 away draw against Serbian side Red Star Belgrade.
Compatriot Kings Kangwa was on unused for the Serbian Champions.
Champions Manchester City beat RB Leipzig 3-1 away to go top of the group on 6 points.
The Germans are second on 3 points while Young Boys and Red Star have a point each.
Elsewhere in Europe, Patson Daka also watched from the bench as the Leicester City made it nine wins from 10 in the Championship.
The Foxes beat Preston North End 3-0.
Daka has only made one substitute appearance this season..
