Just two months shy of his 2nd birthday, Parker Hopkins, of Iowa, was diagnosed with Acute Myeloid Leukemia on August 13.
The family has started a Facebook page named Parker Strong, which caught the attention of Chicago Cubs star Anthony Rizzo.
The Cubs first baseman wrote the family a letter.
In the letter, Rizzo tells Parker about his own battle with cancer at 18, and the things that inspired him on his journey.
He added that he would be giving a $2500 donation to help his family "through this difficult time."
This isn't the first time Rizzo has done this either -- he's sent other letters and donations to other children battling cancer.
Parker's family says they are humbled that such a big star is helping them out.