Certainly, Mark McGwire was no stranger to slugging; in fact, after hitting his 50th home run of the 1998 Major League Baseball campaign, he became the first player in history to notch three consecutive 50-plus-home-run seasons. This remarkable feat was accomplished in the first meeting of a doubleheader between his St. Louis Cardinals and the New York Mets. McGwire connected on a pitch from Mets hurler Willie Blair in the seventh inning to mark his 50th, reserving his place in the history books.