Cincinnati vs. Cleveland Miami vs. Tampa Bay (Tampa/St. Petersburg) Houston vs. Texas (Dallas/Fort Worth/Arlington) Kansas City vs. St. Louis Los Angeles Angels vs. Los Angeles Dodgers Milwaukee vs. Minnesota (Minneapolis/St. Paul) New York Mets (Queens) vs. New York Yankees (Bronx) Oakland vs. San Francisco San Diego vs. Seattle These special local and regional series accounted for 66 interleague games annually from 1998 to 2012, and the other 186 games were determined by rotation. 9/11 rescheduling The 2001 season was suspended for one week due to the September 11 terrorist attacks and resulting disruptions in travel, resulting in games scheduled for September 11–16 being rescheduled to the first week of October and the playoffs and World Series being rescheduled one week later than their originally planned dates. This resulted in the World Series continuing into early November for the first time. 2013–2017 Schedule changes for 2013, precipitated by realignment that created two equal-sized leagues of 15 teams each, gave every team 20 interleague games. Sixteen of which were determined by a match of divisions, one from each league; all teams in a given division play all teams in a given division from the other league. (Each plays a three-game series against four teams from the designated division and two two-game series against the remaining team.) With this change, interleague games were now scattered throughout the season. The matched divisions rotate annually: AL East vs. NL West (2013), vs. NL Central (2014) AL Central vs. NL East (2013), vs. NL West (2014) AL West vs. NL Central (2013), vs. NL East (2014) Each team played its four other interleague games against a designated "natural rival", with two games in each club's city. Thus all 30 teams, rather than 22 of 30 as previously, were deemed to have a natural rival in the other league. In 2013 the natural rivalry games were all scheduled for May 27 to May 30 (Memorial Day weekend) but in 2014 their scheduled dates range from May to August. Ten of the natural rivalries from 2012 and earlier continued, while the Houston–Texas "Lone Star" rivalry had been transformed into an intra-division one with 19 games played. Five of the special arrangements were new in 2013 , including one each for Houston and Texas. Baltimore vs. Washington Boston vs. Philadelphia New York Mets (Queens) vs. New York Yankees (Bronx) Miami vs. Tampa Bay (Tampa/St. Petersburg) Toronto vs. Atlanta Chicago