More than 10,300 players on 1,000-plus teams will come together this weekend for music, games, and a good cause at the world’s largest one-day volleyball tournament.

Ottawa’s annual HOPE Volleyball Summerfest is happening Saturday at Mooney’s Bay to help raise money for six different Ottawa charities and bring together a crowd of more than 25,000 for a day in the sun.

“We have a lot of return players coming out every year who mark their calendars months and months in advance,” said the event’s executive director, Gayle McClelland.

She said the event is sold out in terms of team registration this year, but the free event encourages everyone to come out and watch.

Vendors will line Mooney’s Bay all day, and local acts Amanda Rheaume, Loudlove, Benefit of a Doubt and The Goodluck Assembly will open for international bands The Watchmen and illScarlett.

The HOPE organization has committed to donating $25,000 to each of this year’s local charities.

This year’s charities will include Muscular Dystrophy Canada, Habitat for Humanity and the Ottawa Regional Cancer Foundation.