The Sharks forward made a $2,600 donation to the Pulju indoor skate park that stopped it from being forced to close its doors.
Donskoi, an avid skater who hopes to land a kickflip trick at some point after the Sharks season ends, quietly announced the donation Thursday, less than a day after scoring the series-clinching goal.
"I heard they had some problems, so I just wanted to help a little bit," Donskoi said. "I used to skateboard a lot when I was younger so I think it's important for the kids, that they have different hobbies and opportunities and that they have something to do, so that's why I wanted to help."
Valtteri Karjula, a co-founder of the park who grew up skating with Donskoi, announced the good deed on Twitter on Thursday. He also announced that the park would put Donskoi's No. 27 Sharks jersey in the park and hold a public event when he comes home.