Leinster beat Munster 13-3 to make it to the final, while Ulster booked their place in the final with a last minute penalty from Ian Madigan, to make 22-19 against Edinburgh.
A number of Ulster players will be lining up against their former team as: Jordi Murphy, Jack McGrath, Marty Moore and Ian Madigan have all played for Leinster at one point in their career.
In terms of the lineups, Leinster will be captained by Garry Ringrose while Ross Byrne will take over the number 10 role for the final. There is also the boost of having James Ryan back in the lineup after he was out with a shoulder injury for a number of weeks.
Meanwhile, Johnny Sexton and Luke McGrath are both on the bench for Leinster if needed.
— Leinster Rugby (@leinsterrugby) September 11, 2020
Ulster have gotten a major boost for tommorow's final with the return of Iain Henderson to the starting 15. The Ulster lock has not played since the restart as he was recovering from hip surgery.
One of the more surprising changes though from Dan McFarland is having Alby Mathewson start over John Cooney at scrum half. Cooney has had an excellent 2020, but he will have to make do with coming off the bench on Saturday.
Elsewhere, Eric O'Sullivan starts at loosehead prop, Marcell Coetzee starts at 8, while Billy Burns will start at fly-half with Ian Madigan available on the bench.
— Ulster Rugby (@UlsterRugby) September 11, 2020
Leinster will put their unbeaten streak in the Pro 14 on the line tomorrow and they will be looking for back to back Pro 14 titles.
The games kicks off at 7:45pm and you can watch all the build up on TG4 from 7:05pm and on Eir Sport from 6:30pm. The games is also available to watch on both the TG4 and Eir Sport players.