Leinster cruised to a record seventh Pro14 title as they defeated fellow Irish side Ulster 27-5 in Dublin in Saturday's final.
There will be an all-Irish final in Pro14 after Ulster came from behind to defeat Edinburgh and book a date with Leinster.
Abraham Papali'i and Shane Delahunt were sent off in the second half and Munster capitalised to move into the last four of the Pro14.
The Scarlets can still quality for the Pro14 play-offs next week after beating the Dragons, but they need Connacht to do them a favour.
Danny Wilson got his maiden Pro14 win as Glasgow Warriors' new coach on Friday, though the 15-3 victory over Edinburgh was unspectacular.
New Munster signing RG Snyman faces a long spell on the sidelines after the Pro14 club confirmed he has torn his anterior-cruciate ligament.
A failed takeover bid left Southern Kings in financial difficulties and they will now sit out the remainder of 2020.
The Ospreys were on the verge of victory despite George North's early red card, but Ashton Hewitt's try salvaged a draw for the Dragons.
Leinster picked up where they left off in the Pro14 as they held off Munster in a thrilling contest in Dublin on Saturday.
Tommaso Boni and Jimmy Tuivaiti scored tries as Zebre got the better of Benetton Treviso as the Pro14 returned.
John Barclay has confirmed his 16-year professional career has come to an end after leaving Pro14 side Edinburgh.
The Dragons have added Jamie Roberts to their squad ahead of their return to Pro14 action this month.
There is due to be back-to-back derbies for Pro14 teams when the 2019-20 season resumes, potentially on August 22.
Aled Davies has turned his back on his international career to sign for European and Premiership champions Saracens.
Glasgow Warriors felt it worked best for Danny Wilson to start work early, and for Dave Rennie to depart for his new job as... Read more
Jonah Holmes is heading for Wales to join Top 14 side the Dragons after three seasons with Leicester Tigers.