With the arrival of August comes the final full two months of baseball season.
Division races continue to heat up like the record-high temperatures around the nation, particularly the northeast.
The New York Yankees and Tampa Bay Rays battle for first in the AL East, while the Cincinnati Reds and St. Louis Cardinals go back-and-forth in the NL Central.
Though many rivalries keep their spark despite teams' records, five new ones have begun to develop because of recent success.
Here are the top-five division rivalries, plus five budding rivalries that could become just as good.