![Federer's secret weapon? His backhand slice - Official Site of the 2023 US Open Tennis Championships - A USTA Event Federer's secret weapon? His backhand slice - Official Site of the 2023 US Open Tennis Championships - A USTA Event](https://photo-assets.usopen.org/images/pics/large/f_Federer-2-Fathers-Day-gallery.jpg)
Federer's secret weapon? His backhand slice - Official Site of the 2023 US Open Tennis Championships - A USTA Event
![Slow motion and real-time video footage of backhand slice shots by Roger Federer on the practice courts | Tennis workout training, Roger federer, Tennis workout Slow motion and real-time video footage of backhand slice shots by Roger Federer on the practice courts | Tennis workout training, Roger federer, Tennis workout](https://i.pinimg.com/originals/1b/34/c5/1b34c5d6a6b621991037c15a93ae6b68.jpg)
Slow motion and real-time video footage of backhand slice shots by Roger Federer on the practice courts | Tennis workout training, Roger federer, Tennis workout
![Roger Federer plays a slice backhand en route to victory over Lukas Lacko in the second round at Wimbledon; Getty Images | Tennismash Roger Federer plays a slice backhand en route to victory over Lukas Lacko in the second round at Wimbledon; Getty Images | Tennismash](https://tennismash.com/wp-content/uploads/2018/07/Federer-slice-backhand-Wimbledon.jpg)