Cardiff Blues are sweating on the fitness of several key players ahead of their crunch Magners League clash against Munster.
Wales and British Lions prop Gethin Jenkins is struggling with an ankle injury suffered in the Amlin Challenge Cup semi-final victory over London Wasps.
And with fellow prop Taufa'ao Filise already ruled out with a groin injury, the Blues are facing a potential front-row problem.
Wales lock Bradley Davies is a doubt after suffering a back spasm while Andy Powell is out for the rest of the domestic season with a calf injury.
The Blues are hoping to field their strongest possible team as they aim to over-take Munster for the last place in the play-offs with victory, while also denying the Irish province a bonus point.
Director of rugby Dai Young said: "We are aware of what's needed and we've spelt it out to the players. But first and foremost, you have to look at how you're going to win the game and worry about the issue of bonus points and points difference afterwards."
The last five years have been an emotional rollercoaster on and off the pitch for RGC1404. Promotion to the Principality Premiership was the culmination of five years of hard work and investment in North Wales. WRU TV caught up with prop Joe Simpson, who was one of the first intake of WRU North Wales Academy players in 2010.
Ebbw Vale captain Damien Hudd picked up the biggest accolade of the night at the 11th Principality Premiership Awards Evening held at Principality Stadium, after leading his side to the title for the first time.
Wales assistant coach Robin McBryde is predicting a tough battle against England on Sunday despite the fact they may not be considered to be at full strength. Players will be out to impress Eddie Jones which makes England a dangerous proposition, he says.
Wales U20 captain Tom Phillips and performance psychologist Dr Rich Neil explain why spending three days at Monmouth RFC has further strengthened the togetherness of the squad ahead of the #WorldRugbyU20s