By CIARÁN FAHEY
AP Sports Writer
BERLIN (AP) — United States forward Jordan Pefok has scored on his Bundesliga debut to help Union Berlin defeat Hertha Berlin 3-1 in their first league game of the season. Pefok also scored on his debut in the German Cup last weekend. He opened the scoring in the 31st to set Union on its way to a third consecutive win over its rival to keep the unofficial title of ”Stadtmeister” (city champion). Borussia Dortmund captain Marco Reus’ early goal was enough for a 1-0 win over Bayer Leverkusen. Cup finalist Freiburg routed Augsburg 4-0 away, Borussia Mönchengladbach defeated visiting Hoffenheim 3-1, Wolfsburg drew with promoted Werder Bremen 2-2, and Mainz won 2-1 in Bochum.