The Celtic League fixture beteween Llanelli Scarlets and the Ospreys at Stradey Park has been postponed due to a frozen pitch.
A bumper 11,000 crowd had turned up to see the local derby between the mid-table Scarlets and injury-ravaged Ospreys, but were left disappointed as parts of the playing surface were deemed unsafe on account of the hard ground.
The postponement means the Scarlets remain seventh in the Celtic League table, while the Ospreys languish third from bottom, although both sides have games in hand.
Lions skipper Sam Warburton says the lessons he and his Welsh colleagues learnt in Australia last summer will stand them in good stead for their return visit with Britain and Ireland's elite next month.
See how Stuart Hogg and Adam Jones got on when they went out to have dinner at home with the Joneses of Pontypridd as part of the 'Host the Pride' community programme instigated by British & Irish Lions head coach Warren Gatland.