Gilles Simon
6 ft 154 lbs (Soaking WET!)
Their weakness, of course, lies in strength. As they are gifted with a body that can pretty much do everything equally, they don't have the strength to hit too many killer strokes for a long period of time.
Groundstrokes
This is my oppinion. I think that skinny people do very well with hitting flat shots. It takes the least amount of energy to hit a flat shot well and it is easier for a skinny person to stay on balance. Also they are able to twist their waist enough to get a good hit off of any ball.
Kei Nishikori
5"10" 150 lbs
Serve
Since a skinny person is not that strong. They have to utilize flexibility on their serve. Whatever motion they have needs to be pretty stretched out so they can gain more momentum. A loose serve for them is better than a muscled one.
Volleys
Like groundstrokes, skinny people will get to the ball. They might have some problems if a strong ball is rocketed towards them. If their wrist wobbles on contact, the result will be a sitter for the opponent. It is very important for a skinny person to hang in there and get the balls back as much as they can.
Footwork
Skinny people naturally have pretty good footwork. They seem to float from corner to corner. This will be the main feature in their arsenal: Cardio fitness and marathon type footwork. So hustle should be a given for all times because they have less chances of being injured. Some ankle strengthening exercises would be helpful though at higher levels.
Injuries
I've noticed that skinny people tend to injure wrists and ankles and maybe some elbow strain. The more flexible you are, the less your muscles protect your ligaments. ESPECIALLY past a certain bending point. So make sure you target these points in your workouts.
Venus Williams
Wrist Surgery!
Being skinny is a great body for starting tennis. Since consistency is paramount in lower levels a skinny person have retrieve balls all day. But when the levels get higher and people get stronger, skinny people need to learn how to counter other people's strengths by out hustling them.
Good Luck!
