Tadahito Iguchi fulfilled his childhood dream but his challenge in the major leagues will continue.

News photoTadahito Iguchi

The second baseman became the first Japanese to play on a winning team in a World Series on Wednesday as the Chicago White Sox edged the Houston Astros 1-0 in Game 4 to claim their first series title since 1917.

"It's great that my team became world champion in my first year in the major leagues," Iguchi said. "I still can't believe it and I'd never thought I would be where I am now."