Śląsk Wrocław’s scheduled home fixture on Monday was cancelled due to the flooding so the trainer and players heeded the call of local officials.

With the biggest flood wave of the ongoing catastrophe heading towards the city and expected to hit on Wednesday, Wrocław is preparing for the worst.

One possible scenario involves a deluge of more than 3,000 cubic meters of water per second. As part of defensive preparations, Śląsk Wrocław volunteered to help build new barriers.

Photos posted on the club’s Facebook page show the players rubbing shoulders with locals as they help stock up on sandbags to shore up flood defenses.

“The action was very spontaneous,” a club spokesperson told Poland’s state press agency. “We received information that volunteers were needed and Śląsk players as well as coach [Jacek] Magiera and staff of the club decided to react. We have to help each other.”

The club is also selling virtual tickets to raise money for flood relief. And they are not alone. Elsewhere in Poland, the football world has rallied around to help with clubs and their fans organizing collections.

Among the clubs helping out are Krakow’s Cracovia, which has set up a collection point and appealed to its fans to donate desperately needed items. Meanwhile, one of the Silesia region’s top clubs, Górnik Zabrze, has said it will give 100,000 złoty (€23,440) and 20% of profits from a coming Polish Cup first round match, the Dziennik Polski daily reported.

“Like every club we have our limits,” Zabrze said in a statement, “but they are not the most important thing right now. The most important thing today is those who have lost the roof over their head. Our fans are among them.”