Ross Byrne makes his 100th appearance.
The second of this year's Heineken Champions Cup semi-finals takes place this afternoon.
Leinster are in France to take on Ronan O'Gara's La Rochelle.
Ross Byrne will make his 100th appearance for the province when he lines out at number 10 for Leo Cullen's side.
Action gets underway at 3-o'clock and the winner will face Toulouse in the decider at Twickenham later this month.