The Red Sox and Yankees are making a mockery of the American League East, with a healthy double-digit games lead over third place.
As of the end of Saturday’s action, the Sox and Bronx Bombers have a combined winning percentage of .675 (129-62 overall record between the two teams). That would be good enough for fourth-best combined winning percentage of the top two finishers in a league or division since 1900.
Here are the top five through 2017:
| Year/Lg/Div | W | L | PCT | TEAMS |
| 1909 NL | 214 | 91 | .702 | PIT (110-42); CHN (104-49) |
| 1906 NL | 212 | 92 | .697 | CHN (116-36); NY1 (96-56) |
| 1954 AL | 214 | 94 | .695 | CLE (111-43); NYA (103-51) |
| 1942 NL | 210 | 98 | .682 | SLN (106-48); BRO (104-50) |
| 2001 AL W | 218 | 106 | .673 | SEA (116-46); OAK (102-60) |