More than 1,200 people participated, raising roughly $1.3 million for children's cancer research.
Rizzo was diagnosed with Hodgkin's lymphoma and underwent chemotherapy. He's now in remission.
He created the Anthony Rizzo Family Foundation four years later, with the aim of benefiting cancer research.
At the event, Rizzo presented a check to the Joe DiMaggio Children's Hospital Foundation to establish endowments that will provide "forever funds" to help families at the facility in Hollywood, Florida.