Wales has lost a "Test match animal" after the retirement of Sam Warburton, Ireland legend Brian O'Driscoll says.
Leinster completed an historic double by adding the Pro14 title to its European Champions Cup triumph with a brilliant 40-32 victory over holder Scarlets at Aviva Stadium.
Leinster held its nerve in a frenetic finish to edge a tense all-Irish Pro14 semi-final against Munster 16-15.
Defending champion Scarlets and Munster booked their places in the Pro14 semi-finals with qualifying victories on Sunday (AEST).
Edinburgh secured a place in the Pro14 play-offs as Ulster's late push to finish in the top three of Conference B came up short on the final day of the regular season.
Ulster maintained its late push to qualify for the Pro14 play-offs with a thrilling 36-15 victory against Glasgow Warriors.