FOR the second year in a row Northampton Saints are in Dublin trying to pull off a major Champions Cup semi-final upset. But while Croke Park was the setting for last year's encounter, this evening the action will take place at the Aviva Stadium. Here's everything you need to know about today's tussle: What TV channel is Leinster vs Northampton Saints on? It will shown on RTE Two as well as Premier Sports 1. So everyone will have the option of utilising the free streaming platform provided by the RTE Player. Kick-off from the Dublin 4 ground will be at 5:30pm. What are the odds? Leo Cullen's men are 19 point favourites going into this one at 1/20 while the reigning Premiership champions are 9/1 outsiders. You can back the draw at 50/1. Leinster: Hugo Keenan; Tommy O'Brien, Garry Ringrose, Robbie Henshaw, James Lowe; Sam Prendergast, Jamison Gibson-Park; Cian Healy, Dan Sheehan, Tadhg Furlong; RG Snyman, Joe McCarthy; Max Deegan, Josh van der Flier, Caelan Doris (capt). Replacements: Rónan Kelleher, Andrew Porter, Rabah Slimani, Ryan Baird, Jack Conan, Luke McGrath, Ross Byrne, Jordie Barrett. Northampton Saints: James Ramm; Tommy Freeman, Fraser Dingwall (capt) Rory Hutchinson, Tom Litchfield; Fin Smith, Alex Mitchell; Emmanuel Iyogun, Curtis Langdon, Trevor Davison; Temo Mayanavanua, Alex Coles; Josh Kemeny, Henry Pollock, Juarno Augustus. Replacements: Henry Walker, Tom West, Elliot Millar-Mills, Tom Lockett, Chunya Munga, Angus Scott-Young, Tom James, Tom Seabrook. Key info for attendees: The Blues have warned supporters heading along to cheer them on in person that there will be major DART disruptions in place. The club posted: "Important information for fans attending tomorrow's Champions Cup semi-final between Leinster andNorthampton Saints. "Due to engineering works between Grand Canal Dock and Greystones this weekend, there will be no DART services between Grand Canal Dock and Wicklow. "DART services will operate between Grand Canal Dock and Howth/Malahide. "The following stations will be closed: Lansdowne Road, Sandymount, Sydney Parade, Booterstown, Blackrock, Seapoint, Salthill & Monkstown, Dún Laoghaire, Sandycove & Glasthule, Glenageary, Dalkey, Killiney, Shankill, Bray, Greystones and Kilcoole. "Dublin Bus/Go-Ahead Ireland will accept valid rail tickets for travel between closed stations." Going in opposite directions? While the Irish province have gotten stronger with the additions of Jordie Barrett and RG Snyman, Saints have gone in the reverse direction since they last met in May when Leinster were 20-17 victors. They are languishing down in seventh place in the Premiership table this season. But despite not being given much of a hope by oddsmakers, their director of rugby Phil Dowson insisted they have belief internally that the upset could be on. Earlier this week he emphasized: “Playing against some of the biggest and best sides in world rugby is a great challenge. "And it’s something that as a playing group, we want to pit ourselves against some of those groups. I think that’s why it has that certain magic really.” Last term, Leinster moved 20-3 ahead shortly after the break in front of a capacity crowd at Croke Park but, in the end, their winning margin was only three points.