![Ron Yu on Twitter: "Can't believe I'm already stringing more of these so soon. #GOATneversleeps https://t.co/as3mRZjRjA" / Twitter Ron Yu on Twitter: "Can't believe I'm already stringing more of these so soon. #GOATneversleeps https://t.co/as3mRZjRjA" / Twitter](https://pbs.twimg.com/media/C4EiJ9EWAAA5cp3.jpg:large)
Ron Yu on Twitter: "Can't believe I'm already stringing more of these so soon. #GOATneversleeps https://t.co/as3mRZjRjA" / Twitter
![Roger Federer of Switzerland waves after defeating Nicolas Kiefer of Germany in the semi final at the Gerry Weber Open ATP tennis tournament in Halle June 14, 2008. Federer beat Kiefer 6-1 Roger Federer of Switzerland waves after defeating Nicolas Kiefer of Germany in the semi final at the Gerry Weber Open ATP tennis tournament in Halle June 14, 2008. Federer beat Kiefer 6-1](https://c8.alamy.com/comp/2E77WGT/roger-federer-of-switzerland-waves-after-defeating-nicolas-kiefer-of-germany-in-the-semi-final-at-the-gerry-weber-open-atp-tennis-tournament-in-halle-june-14-2008-federer-beat-kiefer-6-1-6-4-reuterswolfgang-rattay-germany-2E77WGT.jpg)
Roger Federer of Switzerland waves after defeating Nicolas Kiefer of Germany in the semi final at the Gerry Weber Open ATP tennis tournament in Halle June 14, 2008. Federer beat Kiefer 6-1
![تويتر \ Rob Koenig على تويتر: "Check out the "Power Pads" dampener used by Federer....#VibrationDampener. What's your 'catch phrase' for them? https://t.co/HbQVDZJDM5" تويتر \ Rob Koenig على تويتر: "Check out the "Power Pads" dampener used by Federer....#VibrationDampener. What's your 'catch phrase' for them? https://t.co/HbQVDZJDM5"](https://pbs.twimg.com/media/CUGjUYjXIAA9mtm.jpg)