The 1998 Yankees won what was then an American League record 114 games, and the funny thing is they started slowly, and had a bit of a slump in September. The Yankees lost their first three games of the season, and four of their first five games. Panic was already starting to set in given the team’s quick exit from the 1997 postseason.
Then, in September, the Yankees lost eight times in a 12-game span at one point. They were already a lock for the postseason — the Yankees won their 100th game on September 4th — but still, no one likes to hit the skids in September.