The fans who prayed daily for Barbaro and sent online messages of support never were able to get together to celebrate his recovery. This weekend, those fans will put away their keyboards to meet and honor his memory.

The Kentucky Derby-winning colt became a symbol of strength and courage before he was euthanized in January. Now, fans from around the world who sent cards, roses and fruit baskets finally will pay tribute to him Sunday on what would have been the horse’s fourth birthday.

“Just be warned,” said fan Sharon Crumb. “It’s going to be very emotional. I don’t think there’s going to be a dry eye.”

Crumb organized the “Celebration of Barbaro’s Life” on Sunday at Delaware Park, where Barbaro won his maiden race on Oct. 4, 2005. She’ll have some company. More than 500 FOBs–that’s Internet message board lingo for Fans of Barbaro–have committed to attending a day of racing, sharing stories and paying respects