This was quite heavy for the player. Years later, designers were able to produce lighter versions made either of metal or aluminum. It is also possible to have one made out of plastic but this will really depend on the individual. The rackets of today also vary in length, weight and head size. This is ideal for players depending on age, gender and experience in the sport. The yearly Australian tournament, Hyundai Hopman Play-Offs, owns by ITF, in addition offers competing players the chance to enjoy varied team tennis when the season starts. ITF also certified Nations Senior Event in 1999. It is the first senior play-offs among nations that bring together a great number of retired prominent professional tennis players from ATP and Davis Matches. It deviated from the conventional racket holes where the strings were tied. And because of these 'tunnels of wind' another tennis legend has signed up to do endorsements for the company- James Blake. The products that are currently being sold worldwide by the company are: 1.Shoes- which the company guarantees to not wear out within the year it was purchased. In a case of deuce, when one player gets a point, then the umpire calls it as advantage. That player must then gain another point for him to win the set. If not, then the umpire calls deuce again. In announcing the score, the server s score is called first. If the score is zero, then the umpire calls it Love and not zero. But eventually lawn surfaces became clay and concrete creating no problem at all with the ball. With the success and popularity of tennis in Europe, it soon replaced croquet as the summer sport. Although croquet enthusiasts tried so hard to revive their game, the organization they formed in 1869 did not succeed in attracting people to support their sport. Itssurface is not as tough as the hard courts, making the ball bounce lower, which necessitates faster reach for the ball. Indoor courts Indoor courts are made of lumber, cement, or 'rug'. Artificial turf is the other name it is known for. Fairly fast and the most typical is the carpet style indoor courts.