The Pontypridd v Carmarthen Quins Premiership tie due to have been played this afternoon has been postponed.
A morning pitch inspection at Sardis Road, conducted by club and match officials, deemed that the playing surface was frozen and unsafe.
The Ladies Day event at Sardis Road will carry on as scheduled in the Grandstand Lounge, with the Six Nations games between France and Italy and Scotland and England also being screened in the Clubhouse Bar.
Nearly 40 players were involved in the first Wales Under 18 training session of the season. WRU National Performance Manager Gethin Watts is excited at the potential shown by the group and expects the Regional Under 18 Championship to hone their skills even further.