Andrew Cox Barbers, from Radyr, Cardiff, had the shavers out in the Jack Matthews bar at the Cardiff Arms Park, ahead of the team’s scheduled training before today’s match.
Andries Pretorius said the headshave idea wasn’t immediately popular with the whole team, but they all got on board in the end.
“We said we’d raise £10,000 and we ended up with £2,000 more than that,” he said.
“Some of the boys weren’t as keen, but we all want to support [Rees] as much as we can. The fact we’re all in it together makes it even more special really.”
He added: “I just feel sorry for whoever is commentating, trying to differentiate between all the bald players on the pitch!”
The egghead look is a completely new one for Blues wing Czekaj, known for his spiky hair.
He said: “I’ve had this hairstyle since I was 17, so it’s a bit weird. But it’s all for a good cause and that’s the main thing.”
Popular Blues captain Rees has been undergoing treatment since he was diagnosed earlier this year. The 32-year-old announced in October he was taking a break from the game as he underwent testicular surgery.
Earlier this month, he told the BBC he was awaiting the results of his biopsy.
The 32-year-old added: “It has been hard, but I am staying positive and I have finished my first cycle of treatment and start my second next week.
“I am in a positive frame of mind at the moment.”
The Tonyrefail-born hooker, who made his Wales debut in 2005, joined the Blues in the summer