![Hamburg, Germany. 19th July, 2014. German tennis player Alexander Zverev in action during the semi-final against Ferrer of Spanish during the ATP tournament in Hamburg, Germany, 19 July 2014. Photo: DANIEL REINHARDT/dpa/Alamy Hamburg, Germany. 19th July, 2014. German tennis player Alexander Zverev in action during the semi-final against Ferrer of Spanish during the ATP tournament in Hamburg, Germany, 19 July 2014. Photo: DANIEL REINHARDT/dpa/Alamy](https://c8.alamy.com/comp/E53NJW/hamburg-germany-19th-july-2014-german-tennis-player-alexander-zverev-E53NJW.jpg)
Hamburg, Germany. 19th July, 2014. German tennis player Alexander Zverev in action during the semi-final against Ferrer of Spanish during the ATP tournament in Hamburg, Germany, 19 July 2014. Photo: DANIEL REINHARDT/dpa/Alamy
![Roger Federer needed three sets to beat Florian Mayer and advance to semifinals in Hamburg - Sports Illustrated Roger Federer needed three sets to beat Florian Mayer and advance to semifinals in Hamburg - Sports Illustrated](https://www.si.com/.image/t_share/MTY4MjU5NDU4OTQwNjc1OTY5/130719174810-roger-federer-4-single-image-cutjpg.jpg)
Roger Federer needed three sets to beat Florian Mayer and advance to semifinals in Hamburg - Sports Illustrated
![Live Tennis on Twitter: "Alexander #Zverev looks to reach the Hamburg QFs for the first time since 2014 when he faces former runner-up Federico #Delbonis in R2 on Thursday Preview > https://t.co/RkOm1PJ0wy Live Tennis on Twitter: "Alexander #Zverev looks to reach the Hamburg QFs for the first time since 2014 when he faces former runner-up Federico #Delbonis in R2 on Thursday Preview > https://t.co/RkOm1PJ0wy](https://pbs.twimg.com/media/EAR8F79VUAUxeDm.jpg)