Complex sentence: In Game 4, the Royals completed their sweep of the Orioles, with another 2-1 squeaker, setting a new postseason record with their "eighth" straight victory, and advancing to the World Series for the first time since 1985.
Split into simpler sentences: In game 4, the Royals completed the sweep of the Orioles, with another 2-1 victory. The Royals advanced to the World Series for the first time since 1985.