then-record of MLB career home runs from 714 to 715. It is unclear how many, if any, of these hits were singles that would have been grand slams under modern rules. References Further reading Batting (baseball) Baseball terminology 1999 Major League Baseball season National League Championship Series New York Mets postseason Atlanta Braves postseason League Championship Series games October 1999 sports events in the United States 1999 in sports in New York City