Sam Warburton appears to have lost the Wales captaincy after Rob Howley named him back in his starting line-up to face Scotland this weekend. It has instead stayed with Ryan Jones.
Warburton's return is one of three changes for a game that could set up a final week showdown with England in Cardiff.
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The Bluebirds need two wins from their final three games to guarantee promotion.
Jeremy Corbyn will be the main speaker at a Welsh Labour conference coming to terms with Carwyn Jones' announcement of his departure.
Any heavy showers will clear away northeastwards through late evening.