Shamrock Rovers is an Irish football club based in Tallaght, Dublin.
TNS (The New Saints) is a Welsh football club based in Oswestry, Shropshire.
Shamrock Rovers have won the League of Ireland Premier Division title a record 18 times.
TNS have won the Welsh Premier League title a record 13 times.
The two teams have never faced each other in a competitive match prior to their Europa Conference League meeting.
Shamrock Rovers qualified for the Europa Conference League by finishing second in the League of Ireland Premier Division, while TNS qualified by winning the Cymru Premier League.