Leinster take on Harlequins at the Aviva Stadium.
Jonathan Sexton plays his first match since April later this evening.
He's been named as captain for Leinster's pre-season friendly with Harlequins.
Sexton hasn't played since sustaining a head injury in the Heineken Champions Cup quarter-final win over Exeter.
Kick-off at the Aviva Stadium is at 7.