Evan Malamud's fundraising dream was complete Saturday as baseball-turned-Twitter star Jose Canseco joined him for a home-run derby at the Ottawa Stadium.

The 1988 American League MVP and six-time all-star with 462 career home runs swung in front of hundreds of fans for Home Runs for Autism, an organization that's helping Malamud's five-year-old son.

Canseco, whose latest campaign is to get a spot in the 2012 MLB All-Star Game, said challenges like this keep him on his game.

"I think challenges and having fun and travelling to events like this keeps me young. It keeps me going," said the 47-year-old slugger. "It's a great cause to be behind and I love it. I enjoy it."

The former Toronto Blue Jay agreed to the autism fundraiser after Malamud tweeted him during a stretch when Canseco was challenging other celebrities to a variety of competitions.

Proceeds from the event, which also included a celebrity softball game, are going to the CHEO Foundation.

With a report from CTV Ottawa's Stefanie Masotti