Pennant races are heating up as Major League Baseball teams vie for division titles, playoff berths and postseason seedings.

Once a week through the remainder of the regular season, FOX Sports will bring you "Mission October."

FOX Sports was granted an unprecedented 24/7 real-time access to ballclubs in the hunt for postseason glory, told through the eyes and voices of a player in the heat of the pennant battle, following them through the unbelievable highs and stunning lows as they fight for a chance to make history.

Next "Mission October" episode: Monday, 7:30 p.m. ET

An inside look at the Boston Red Sox as the greatest rivalry in sports continues with a trip to the Bronx to face the rival New York Yankees.

Previous episodes

L.A. Dodgers: Only in Hollywood Get inside the National League West leaders, the Los Angeles Dodgers, as they continue their historic winning stretch on a march to postseason glory.

Video: Mission October: Puig and Gonzalez lead LA

Pittsburgh Pirates: Buc-ing a trend Pittsburgh is one of the biggest stories of the 2013 season. Led by All-Star Andrew McCutchen, the Pirates snapped a 20-year losing skid and are on the verge of making their first postseason appearance since 1992.

Check out how reliever Mark Melancon enjoys his time on the road.

Video: Mission October: Melancon relishing role with Pirates