Robin Williams' children Zak, Zelda and Cody -- along with his good pal and fellow comedian Billy Crystal -- honored the late actor at Game 5 of the World Series on Sunday, Oct. 26.

Williams' oldest child, Zak, 31, threw the ceremonial first pitch -- right into the mitt of Crystal, who was the catcher. The 'Mrs. Doubtfire' actor's children wore tribute San Francisco Giants shirts emblazoned with Williams' last name on the back.

"We are honored to be here in support of the tribute to our father, someone who loved his hometown and especially the Giants," Williams' children said in a statement (quote via Us Weekly). "For all of us, it is a tremendous delight and a little surreal to throw out the ceremonial first pitch of a World Series game for our team to our dad's best friend. We could not think of a better way to celebrate his memory. Let's go Giants!"

The Academy Award-winning actor, who grew up in nearby Marin County, was also honored at the game with a moving tribute video filled with clips of Williams' most iconic scenes and visits to Giants' games.

Us Weekly reports that Williams' daughter Zelda, 25, was visibly emotional at the ceremony, wiping tears from her eyes.

Click here to watch Williams' children and Billy Crystal honor the late actor.

Watch a Touching Tribute to Robin Williams