Robin Williams' son pays tribute to late father at Baseball World Series

Robin Williams' son Zak recently paid tribute to his late father at the Baseball World Series game by throwing the ceremonial first pitch to actor Billy Crystal.

The 'Mrs. Doubtfire' star was a loyal Giants fan and his three children attended the team's final home game of the championship, where clips of the actor were shown on the Jumbotron big screen, Contactmusic.com reported.

The three kids were each gifted team jerseys with 'Williams' on the back.