Giants pitcher Matt Cain wants to do his part to help the next Batkid make good on a dream.

Cain and his wife, Chelsea, have pledged a $50,000 matching grant and challenge to Make-A-Wish Foundation Greater Bay Area Executive Director Patricia Wilson.

If Wilson can complete her goal of raising $50,000 by Wednesday night, the Cains will match it.

The couple say they were inspired — along with a captivated country — by 5-year-old Miles Scott’s whirlwind day last month posing as his favorite superhero solving crime in San Francisco as part of a Make-A-Wish event. The boy has undergone leukemia treatment and is in remission.

Make-A-Wish says Wilson pledged to plunge into San Francisco Bay this past Saturday if supporters raised $7,500, the typical cost of a wish. She jumped into the icy water, and had raised more than $20,000 as of Monday afternoon.