FT
Celtic
5
–
1
Slovan Bratislava
—
FT
Borussia Dortmund
7
–
1
Celtic
—
FT
Atalanta
0
–
0
Celtic
—
FT
Celtic
3
–
1
RB Leipzig
—
FT
Celtic
1
–
1
Club Brugge KV
—
FT
Dinamo Zagreb
0
–
0
Celtic
—
FT
Celtic
1
–
0
BSC Young Boys
—
FT
Aston Villa
4
–
2
Celtic
—
FT
Celtic
1
–
2
Bayern München
—
FT
Bayern München
1
–
1
Celtic
—
Faded rows: team matches without B. Siegrist in the lineup