Cardiff claimed a crucial victory over Ospreys in a dramatic Welsh derby at the Arms Park, winning 24-21 to boost their United Rugby Championship play-off hopes. The hosts held on despite a tense finish, with Ospreys pulling to within three points late through a converted try from Wales fly-half Edwards.

The match was marred by ill-discipline, with Ospreys reduced to 13 players when Kasende received a red card at the 17-minute mark and Watkin picked up a yellow shortly after. Cardiff failed to score during that period but led 10-7 at half-time. The hosts extended their lead after the break when hooker Belcher and flanker Thomas—named player-of-the-match—crossed for tries, with Sheedy slotting over two conversions.

Ospreys rallied through a scything break from replacement prop Cam Jones that set up Walsh, and when Cardiff lock McNally received a yellow card five minutes from time, Edwards crossed to bring the visitors within three points. Cardiff had the chance to extend their lead but opted against taking a penalty kick, instead chasing a bonus-point try that never materialized as they clung on for a vital victory.