The Baltimore Orioles began at the beginning of the 1900s but weren’t based out of New York since the Giants were there. The Orioles played their first game in 1901, with John McGraw as their manager. He went to the Giants in 1902, so the next week the Orioles were being managed by the ex-manager of the Giants. Then, the American League told them to move to New York. When the Orioles moved, their owners found American League Park, or Hilltop Park, which was smaller than Polo Ground, the Giants' park. They were called the “Invaders,” by the New York Evening Journal. In 1904, they were named the “New York Highlanders,” but often called, “Yankees,” meaning “Americans.”

Polo Grounds was damaged by a fire in 1911, and the Highlanders allowed them to use their field. They became friendlier, and the Highlanders went to the new Polo Ground in 1913. Since they didn't play on top of a hill, “Highlander” didn't make sense. So, that year, they were known as the New York Yankees.

In 1919, they began to get different players, mostly from the Red Sox. In 1922, construction began on Yankee Stadium across from Polo. In 1927, this team was said by some to be “Murderers' Row,” for the line-up was so strong. They were the first team to keep numbers on their uniforms. They had many famous players, from Lou Gehrig to Joe DiMaggio. Babe Ruth had the most home runs until Roger Maris hit one more. Their numbers are retired, never to be worn again.

Even though 2008 wasn't their year, they have won 26 world championships, which is the most won in any sport, not just baseball. Derek Jeter said that he would do his part to make history in the new Yankee Stadium in 2009.