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GELSENKIRCHEN, GERMANY - FEBRUARY 18: Cristiano Ronaldo of Real Madrid scores the opening goal by heading the ball over goalkeeper Timon Wellenreuther of Schalke during the UEFA Champions League Round of 16 match between FC Schalke 04 and Real Madrid at the Veltins-Arena on February 18, 2015 in Gelsenkirchen, Germany. (Photo by Dennis Grombkowski/Bongarts/Getty Images)

GELSENKIRCHEN, GERMANY - FEBRUARY 18:  Cristiano Ronaldo of Real Madrid scores the opening goal by heading the ball over goalkeeper Timon Wellenreuther of Schalke during the UEFA Champions League Round of 16 match between FC Schalke 04 and Real Madrid at the Veltins-Arena on February 18, 2015 in Gelsenkirchen, Germany.  (Photo by Dennis Grombkowski/Bongarts/Getty Images)