Johnny Sexton has won his fitness battle and starts for Leinster in tomorrow's Guinness Pro14 final against Scarlets at the Aviva (6pm). 

The out-half missed last weekend's semi-final victory over Munster with a calf injury but has been including in a side that has four changes.

Captain Isa Nacewa, who played just 40 minutes last week, is also named and will play his last game before retirement. 

Nacewa has won 184 caps scoring 47 tries in the process, for a total of 706 points, including the crucial six points off the tee late in Bilbao to bring a fourth European Cup back to Leinster.

Tadhg Beirne, fresh from his call-up to the Ireland squad for the tour of Australia, is included in the Scarlets line-up at number 8. 

It will be the versatile forward's last appearance for the region before moving to Munster. 

Full-back Leigh Halfpenny returns for Wayne Pivac's side having missed out on the reigning champions' semi-final against Glasgow with a hamstring injury. 

Cian Healy, Dan Leavy and Rob Kearney are all back in the starting XV for the Champions Cup winners.

Leinster: Rob Kearney, Jordan Larmour, Garry Ringrose, Isa Nacewa (capt), James Lowe, Johnny Sexton, Luke McGrath; Cian Healy, Seán Cronin 
Tadhg Furlong, Devin Toner, James Ryan, Rhys Ruddock, Dan Leavy, Jack Conan.

Replacements: James Tracy, Jack McGrath, Andrew Porter, Scott Fardy, Jordi Murphy, Nick McCarthy, Joey Carbery, Rory O’Loughlin.  

Scarlets: Leigh Halfpenny, Johnny Mcnicholl, Scott Williams, Hadleigh Parkes, Steff Evans, Rhys Patchell; Gareth Davies, Rob Evans, Ken Owens (capt), Samson Lee, Lewis Rawlins, Steve Cummins, Aaron Shingler, James Davies, Tadhg Beirne.

Replacements: Ryan Elias, Wyn Jones, Werner Kruger, David Bulbring, Will Boyde, Jonathan Evans, Dan Jones, Tom Prydie

Follow Leinster versus Scarlets in the Pro14 final via our live blog on RTÉ.ie and the News Now App from 5pm, or listen to live commentary on RTÉ Radio 1'S Saturday Sport.