Kansas City Chiefs fans have taken up the charitable cause that Buffalo Bills fans are known for, and donated more than $80,000 to a Buffalo children’s hospital following the teams’ divisional playoff game on Sunday.

Chiefs Kingdom, the nickname for the Kansas City fan base, has come together to support Bills Mafia.

The Buffalo News reported that more than 6,000 Chiefs fans have combined to donate more than $80,000 to the John R. Oishei Children’s Hospital in Buffalo, many of the contributions coming in $13 increments. The 13 is a nod to the 13 seconds remaining in regulation when the Chiefs got the ball on Sunday, then tied the game in regulation, and won in overtime, 42-36 at Arrowhead Stadium.

“It’s certainly bittersweet with the game,” said Andrew Bennett, the vice president of the Children’s Hospital of Buffalo Foundation, the medical facility’s philanthropic arm, “but the generosity of fans toward Josh is just absolutely remarkable. We’re incredibly grateful for this impactful support. It’s a great sign of sportsmanship and integrity, watching how fans have reacted to this. It’s another huge win for the kids that we’re helping out, day-in and day-out here in Western New York.”

Bills fans in recent years have donated to the hospital in honor of Allen’s late grandmother, and many of those donations were in $17 increments to reflect Allen’s jersey number. They also donated to Andy Dalton’s charity after the Cincinnati Bengals helped the Bills make the playoffs.