Watch Robin Williams' Kids Honor Their Late Father at World Series

Billy Crystal caught the first pitch of Game 5 from Williams' son Zak.

ByABC News
October 27, 2014, 10:30 AM
Robin Williams' son Zak Williams gets a pat on the back from Billy Crystal after Zak threw out the ceremonial first pitch as his siblings Zelda and Cody look on before Game 5 of baseball's World Series between the Kansas City Royals and the San Francisco Giants, Oct. 26, 2014, in San Francisco.
Robin Williams' son Zak Williams gets a pat on the back from Billy Crystal after Zak threw out the ceremonial first pitch as his siblings Zelda and Cody look on before Game 5 of baseball's World Series between the Kansas City Royals and the San Francisco Giants, Oct. 26, 2014, in San Francisco.
Marcio Jose Sanchez/AP Photo

— -- Total class from the San Francisco Giants.

The team, which is battling the Kansas City Royals for a World Series trophy, had Robin Williams' children - Zak, Cody and Zelda - out to the mound to participate in the first pitch of Game 5 Sunday night.

"Fans, earlier this year, we lost a brilliant artist, a devoted husband and father, and a loyal Giants fan," the game announcer said of Williams, a devout Giants fan. "He had a heart of gold and brought joy to the world."

Then the audience was directed to the main scoreboard for a touching tribute filled with shots of Williams’ best movies, stand-up comedy and his trips to the stadium. It started with the comedian shouting "Good morning, Vietnam!" in a clip from his iconic film.

After the tribute, Williams' close friend Billy Crystal joined the kids to ceremoniously start the big game.

PHOTO: Zak Williams, son of Robin Williams, reacts after throwing out the ceremonial first pitch before Game 5 of baseball's World Series between the Kansas City Royals and the San Francisco Giants, Oct. 26, 2014, in San Francisco.
Zak Williams, son of Robin Williams, reacts after throwing out the ceremonial first pitch before Game 5 of baseball's World Series between the Kansas City Royals and the San Francisco Giants, Oct. 26, 2014, in San Francisco.

Crystal stood behind the plate and took the first pitch from Williams' eldest son, Zak, 31, while all the children wore San Fran jerseys that read Williams on the back. Crystal and all the children embraced after the toss.

What a way for the Giants to start off what ended up being a big win for the team, which leads the series 3-2.

Williams died at the age of 63 Aug. 11 of an apparent suicide.