The 1999 National League Division Series (NLDS), the opening round of the 1999 National League playoffs, began on Tuesday, October 5, and ended on Saturday, October 9, with the champions of the three NL divisions—along with a "wild card" team—participating in two best-of-five series. They were: * (1) Atlanta Braves (Eastern Division champion, 103–59) vs. (3) Houston Astros (Central Division champion, 97–65): Braves win series, 3–1. * (2) Arizona Diamondbacks (Western Division champion, 100–62) vs. (4) New York Mets (Wild Card, 97–66): Mets win series, 3–1.