original question: which tennis player uses [One-handed backhand]?
answer: justine henin, pete sampras, roger federer...
answer type: Tennis Player.
auxiliary information: The one-handed backhand is also known as the classical backhand. Nowadays more pro-players use a double-handed backhand, which has some disadvantages over the one-handed backhand.  1. First of all the reach with one-handed backhand is greater. Therefore a player has to run less distance when forced to move towards the ball.  2. A one-handed backhand also allows doesn't force the player to still really deep when hitting a ball 3. Generally a one-handed backhand allows for more touch when hitting the ball 4. Hitting slice backhands is also easier when hit one-handed. Double handed slice is a tough shot which often misses the needed touch. 5. It's easier to switch from full swing to slice when the backhand is hit one-handed. Players like Nadel of Djokovic have mastered this skill but it doesn't come naturally  6. From an esthetic point of view a one-handed backhand is considered a beautiful shot, regardsless of its effectiveness  Downside of playing a one-handed backhand is the need for excellent timing and precision. If done correctly the one-handed backhand is a fierce shot with great pace. Maximum relaxation in the hitting arm is required. With a double handed backhand there is more room for correction. It often allows players to become more solid in rallyplay.
What is the name of the tennis player who uses [One-handed backhand]?