Personally, I would have liked to have seen the Yankees clinch against Boston, but this will definitely do.
The new magic number is now 3 (to clinch homefield in the ALCS).
The Yankees also extended their record streak to 19 consecutive years finishing at least 12 games over .500 (1993-2011). The old record was 18, held by (who else?) the New York Yankees from 1926-1943.
And one wild thought: What if the Wild Card is neither the Bosox or the Rays but the Angels?