Actor John O’Hurley ably emceed the annual Champions for Children’s fund-raiser for Boston Children’s Hospital this week. O’Hurley (right), perhaps best known for playing the silver-haired J. Peterman on “Seinfeld,” was joined onstage by Pats punter Zoltan Mesko (center) and several kiddos. There was a load of local sports figures in the crowd at the Seaport World Trade Center, including Celtics forward Chris Wilcox , current and former Pats players Eric Alexander , Joe Andruzzi , Tim Fox , Stephen Gostkowski , Steve Gregory , and Matthew Slater , former Sox closer Keith Foulke , and Revs keeper Matt Reis .