Add another Yankee to the World Baseball Classic mix. Jazz Chisholm Jr. has committed to suit up for Great Britain, as WBC reporter Shawn Spradling reported Friday, giving the Yankees second baseman a chance to play on the big stage this spring. Great Britain delegation head Gary Anderson and manager Brady Marcelino said last month at the Winter Meetings that there was strong interest in having Chisholm — who is entering his walk year — on the team; it was just a matter of working through