Washington Capitals fans and Pittsburgh Penguins fans don't like each other.

But when it comes to aiding victims of a tragic mass shooting, they are more than willing to put that heated rivalry aside.

The Capitals, who announced that they were donating half the proceeds of their 50/50 raffle from Wednesday's game against the Penguins to the Jewish Federation of Greater Pittsburgh, instead were able to give the full amount when a Capitals fan gave up the winning share of more than $19,000.

The money will go to aid the families of those killed and injured in the Oct. 27 shooting at the Tree of Life Synagogue that left 11 dead in Pittsburgh's Squirrel Hill neighborhood.

The fan, a Capitals season-ticket holder who asked not to be identified, told ESPN, "It's a check I could never cut myself. But I walked out of that arena $100 poorer, yet infinitely richer in spirit, knowing that we had helped some folks that needed help. It was not my money. It was destined to go back."

The Penguins, who wore Stronger Than Hate logos and auctioned off jerseys, donated nearly $350,000 to the foundation on Thursday.

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Thursday was also the day that the Los Angeles Kings and Minnesota Wild wore helmet decals and held up signs saying "Enough" after a mass shooting left 12 dead at a dance bar in Thousand Oaks, California.

The Kings will donate the proceeds of two 50/50 raffles to victims' families.