This 25 year old Swiss tennis professional currently ranks No. 1 in the world. He is a very promising talent and has proven many great achievements since he started playing tennis. In 2004, he won three Grand Slam singles tournaments. By 2006, he has already won at least ten singles championships for three consecutive years. In 1978, a string which has multi-filaments was created. 5.Sports bags were first sold in the early 80's. 6.In 1989, the grip on racket handles were improved. 7.Tunnels of wind on their rackets were engineered in the year 2005. It deviated from the conventional racket holes where the strings were tied. Elbow Tennis: Aching Tendons Tennis elbow, or lateral epicondylitis, is extremely aching tendonitis that sometimes badly affect an elbow subjected to too much stress, for instance related with tennis. Exactly what causes tennis elbow is unidentified, although it is thought to be for the reason that there are inflammation of the tendon and occurrence of small tears of the tendons that are attach to the muscles of the forearm to the arm bone at the elbow joint. You learn to be competitive and adjust to the highs and lows of winning or losing. 22. You become more responsible as you accept the fact that it is your responsibility to practice your skills, check your equipment, and eat right when preparing for a match. 23. You manage to adapt to various situations by learning to adjust to things beyond your control like the weather. This is because: - the heavier the frame, the more power it generates - the heavier the frame, the less it vibrates - the stiffer the frame, the more power it generates - if the frame is stiff, then it transmits more to the arm - a stiff frame entails a more uniform ball response against the swing of the racquet - the larger the frame, the more power it generates - the larger the frame, the more resistant it is to twisting 4. These added extensions on the sidelines are identified as alleys. Boundaries for doubles are identified as "doubles alleys". Alleys near the area of the court are required for players when reaching for swarming balls. Net designed parallel to the base lines is stretched out and separate the court at the midpoint.