BP Daily: Inside the Yankees' surge

The New York Yankees and Boston Red Sox -- once again the AL East's top two teams -- open a four-game series Thursday in the Bronx. Much has been (and will continue to be) made of the fact that the Yankees are winless against their heated rivals this year. However, beyond that lopsided tally, New York has been the better of the two teams to date, particularly since Alex Rodriguez returned from hip surgery, which sidelined him for the first month of the season (a period during which the Red Sox beat the Yankees five times in a two-week span). After all, it's the Yankees who lead the division by 2½ games, the product of their current upper hand in the division's never-ceasing arms race.