High Quality Content by WIKIPEDIA articles! The 2007 American League Championship Series (ALCS), the second round of the 2007 American League playoffs, began on October 12 and ended on October 21. It was a best-of-seven series, with the East Division champion Boston Red Sox facing the Central Division champion Cleveland Indians. The Red Sox came back from a 1–3 deficit to defeat the Indians 4–3, outscoring them 30–5 over the final three games of the Series.