For those who have played in the American and the Nationalleagues, interleague play becomes a reminder of how the gamechanges all ?because of pitching. As in pitchers not hitting - and sometimes missing it - topitchers seldom seeing a weak link in a lineup.''Two words,'' said White Sox reliever Will Ohman, who haspitched for the Cubs , Atlanta Braves, Los AngelesDodgers and Baltimore ?Orioles. ''Designated hitter.