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Schürrle began his professional football career with Mainz 05, a German club based in the city of Mainz. He joined the club's youth academy at the age of 12 and progressed through the ranks, making his senior debut in 2009. Schürrle quickly established himself as a key player for Mainz, scoring 15 goals in 66 appearances before moving to Bayer Leverkusen in 2011.