Leinster survived a late Ulster comeback to win a thrilling Irish derby 29-21 in Belfast. The visitors built a commanding lead through tries from Jack Prendergast, Robbie Henshaw, and others, with Prendergast capping his impressive return from international exile with a bonus-point score. Ulster's rising penalty count and a sin-bin for Harry Sheridan proved costly.

Despite falling 29-0 behind, Ulster mounted a stirring fightback with tries from replacement Bryn Ward and Zac Ward's double in three minutes. The home side's momentum grew after Leinster captain James Ryan received a red card upgrade, but the visitors held firm. Prendergast, left out of recent Champions Cup squads, made a significant impact in his return to the lineup.

This victory moves Leinster above Ulster in the United Rugby Championship standings, dealing a blow to the hosts' momentum following their Challenge Cup exploits. Ulster now face Munster next week before hosting Exeter Chiefs in the Challenge Cup semi-finals, while Leinster travel to Benetton before their Champions Cup decider against Toulon.