The magic number is the combined number of wins by the first-place team and losses by the trailing team that will eliminate the trailing team from winning the division.
Here is how the magic numbers for Major League Baseball's division titles look on the morning of Sunday, Oct. 4:
MORE: MLB playoff scenarios | Full standings | Postseason schedule
AL East
First-place team: Blue Jays (Clinched)
Magic number to eliminate:
2. Yankees (Eliminated)
3. Orioles (Eliminated)
4. Rays (Eliminated)
5. Red Sox (Eliminated)
AL Central
First-place team: Royals (Clinched)
Magic number to eliminate:
2. Twins (Eliminated)
3. Indians (Eliminated)
4. White Sox (Eliminated)
5. Tigers (Eliminated)
AL West
First-place team: Rangers
Magic number to eliminate:
2. Astros (1)
3. Angels (Eliminated)
4. Mariners (Eliminated)
5. A's (Eliminated)
NL East
First-place team: Mets (Clinched)
Magic number to eliminate:
2. Nationals (Eliminated)
3. Marlins (Eliminated)
4. Braves (Eliminated)
5. Phillies (Eliminated)
NL Central
First-place team: Cardinals (Clinched)
Magic number to eliminate:
2. Pirates (Eliminated)
3. Cubs (Eliminated)
4. Brewers (Eliminated)
5. Reds (Eliminated)
NL West
First-place team: Dodgers (Clinched)
Magic number to eliminate:
2. Giants (Eliminated)
3. Diamondbacks (Eliminated)
4. Padres (Eliminated)
5. Rockies (Eliminated)