Two teams with plenty still to prove. Here's why this week's Red Sox-Yankees series will have postseason implications.

The Boston Red Sox (68-59) and New York Yankees (69-57) clash in the Thursday opener of a 4-game rivalry series in the Bronx. The first pitch from Yankee Stadium is slated for 7:15 p.m. ET (FOX).

Now would be a good time for the Boston Red Sox to snap out of their funk, with a massive four-game series with the New York Yankees starting Thursday night in the Bronx.