So many people, it seemed, wanted to make this series between the Mets and the Yankees into something significant. The teams each owned a share of first place — the first time that has happened when they met each other. Matt Harvey would face Alex Rodriguez, a showdown that might have had historic — and theatrical — implications if Rodriguez were to tie Willie Mays on the career home run list. Were the Mets, who had won 11 in a row, really for real? Were the Yankees, who had won six of seven, tiptoeing back toward relevance?