Viking to win is 1/2.
Viking to win and over 2.5 goals is 7/5.
Both these clubs caused seismic upsets in the previous round, but only one can march on into the play-offs.
Sligo Rovers, having needed a penalty shootout to beat Bala Town, were massive underdogs going into their clash with Motherwell.
However, the Bit O’Red swatted aside their Scottish opponents, winning 1-0 at Fir Park and then 2-0 at the Showgrounds.
A week ago, Shane Blaney broke the deadlock with a stunning free-kick before Max Mata cooly rubber stamped the win.
So, the League of Ireland side have won multiple European ties within the same season for the very first time.
Meanwhile, very few expected Viking to prevail when they were drawn against Czech giants Sparta Prague.
However, after a goalless draw on the road, the Norwegian club prevailed 2-1 in Stavanger last Thursday.
Viljar Vevatne and Maï Traoré the scorers in a comeback win, the latter coming deep into added on time.
So, this already represents the Dark Blues’ best European run since their sole group stage appearance back in 2005.
Will there be a winner at Viking Stadion?