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Roger Federer can break Jimmy Connors' mark of 109 titles, says Nicolas Kiefer | Tennis News | Sky Sports
![German tennis pro Nicolas Kiefer looks frustrated during his match against Belarusian Mirnyi at the ATP German Masters in Hamburg, Germany, Wednesday, 17 May 2006. Kiefer lost the match in two sets German tennis pro Nicolas Kiefer looks frustrated during his match against Belarusian Mirnyi at the ATP German Masters in Hamburg, Germany, Wednesday, 17 May 2006. Kiefer lost the match in two sets](https://c8.alamy.com/comp/D3NHRG/german-tennis-pro-nicolas-kiefer-looks-frustrated-during-his-match-D3NHRG.jpg)
German tennis pro Nicolas Kiefer looks frustrated during his match against Belarusian Mirnyi at the ATP German Masters in Hamburg, Germany, Wednesday, 17 May 2006. Kiefer lost the match in two sets
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Tennis - Wimbledon Championships - Men's Singles - Second Round - Boris Becker v Nicolas Kiefer Stock Photo - Alamy
![Ex-tennis star Nicolas Kiefer assesses entry chaos around Djokovic for Alexander Zverev "positive" and expects victory at the Australian Open - California18 Ex-tennis star Nicolas Kiefer assesses entry chaos around Djokovic for Alexander Zverev "positive" and expects victory at the Australian Open - California18](https://california18.com/wp-content/uploads/2022/01/7854855018579991.jpeg)
Ex-tennis star Nicolas Kiefer assesses entry chaos around Djokovic for Alexander Zverev "positive" and expects victory at the Australian Open - California18
![Tennis, Gerry Weber Open Halle Germany 13.6.99, Final match Nicolas Kiefer (GER) vs Nicklas Kulti (SWE) --- Nicolas Kiefer (GER Stock Photo - Alamy Tennis, Gerry Weber Open Halle Germany 13.6.99, Final match Nicolas Kiefer (GER) vs Nicklas Kulti (SWE) --- Nicolas Kiefer (GER Stock Photo - Alamy](https://c8.alamy.com/comp/MK89GY/tennis-gerry-weber-open-halle-germany-13699-final-match-nicolas-kiefer-ger-vs-nicklas-kulti-swe-nicolas-kiefer-ger-MK89GY.jpg)
Tennis, Gerry Weber Open Halle Germany 13.6.99, Final match Nicolas Kiefer (GER) vs Nicklas Kulti (SWE) --- Nicolas Kiefer (GER Stock Photo - Alamy
![Roger Federer holds the key to unlocking Alexander Zverev potential - Kiefer | Tennis | Sport | Express.co.uk Roger Federer holds the key to unlocking Alexander Zverev potential - Kiefer | Tennis | Sport | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/72/590x/Roger-Federer-holds-the-key-to-unlocking-Alexander-Zverev-potential-Kiefer-1201983.jpg?r=1573232811571)
Roger Federer holds the key to unlocking Alexander Zverev potential - Kiefer | Tennis | Sport | Express.co.uk
Kiefer shows appetite for battle - The Royal Gazette | Bermuda News, Business, Sports, Events, & Community
![Nicolas Kiefer at the Los Angeles Tennis Open Editorial Stock Image - Image of wide, professional: 11418909 Nicolas Kiefer at the Los Angeles Tennis Open Editorial Stock Image - Image of wide, professional: 11418909](https://thumbs.dreamstime.com/z/nicolas-kiefer-los-angeles-tennis-open-11418909.jpg)