This article gives a history of how tennis racquets started all the way up until now. It also says that the different materials that were used in the racquets as they became better and better were game changers. The article also talks a bout how some of the pros benefited from different racquets. For example, "The ultra-light racket helped Roddick develop a monster serve and other great overall skills." This shows how even a pro can benefit from a certain racquet and improve his/her performance. Roddick ended up winning the 2003 US open with this racquet (Babolat Pure Drive). Gurvinder Singh Gandu "The Evolution of the Tennis Racket" Complex, 28 August 2012, http://www.complex.com/sneakers/2012/08/the-evolution-of-the-tennis-racket, Accessed 3 May 2018
This article explains how sweet spot, torque, impulse reaction, shock etc. affect how a racquet will perform. For example the part where the article explains sweet spots, "There are actually various types of sweet spots; the center of percussion, vibration node, and center of oscillation. All these areas are not the same and have different properties that make them a sweet spot. There is a rotational force that exerts a torque on the hand every time a tennis ball is hit. This causes a force going in one direction of the upper part of the hand while a reaction force in the opposite direction is exerted on the bottom of the hand." The article continues to explain the physics behind the many things a tennis racquet does. They also explain how these things can affect the performance. The article also helps you when buying a racquet. It explains how these thing can affect you game and how different racquets help you play. ***"The Science Behind Tennis Racquet Performance and Choosing the Right Racquet", Illumin, 3 May 2018, http://illumin.usc.edu/printer/154/the-science-behind-tennis-racquet-performance-and-choosing-the-right-racquet/, Accessed 3 May 2018.
This video explains on how to buy a tennis racquet (obviously the title can tell you that). In the video Peter Freeman states, "...In my opinion you want to look at three factors, number one is what level player you are... number two you want to think what style do you like to play... and number three is price..." In the previous quote Peter talks about how different styles of play and your level of play to choose a racquet. Which proves that different racquets affect performance based on which one you buy. Peter then continues to help you find a racquet that fits you. ***"How to buy tennis racquet in 2014" YouTube, uploaded by Crunch Time Coaching, 31 December 2013, https://www.bing.com/videos/search?q=Do+tennis+racquets+improve+performance&&view=detail&mid=AF4D53AF2ED31DBFDAC7AF4D53AF2ED31DBFDAC7&&FORM=VRDGAR
In the video Gerald shows that racquets of the same brand and model aren't the same. He then proceeds to weigh racquets that are the same brand and model on a scale. As each racquet is weighed he finds out that they are different weights proving what he said earlier about racquets not being equal. ***"All racquets are not created equal. Do your racquets match?" YouTube, uploaded by Tao Tennis Shops, 26 February 2015, https://www.bing.com/videos/search?q=Do+tennis+racquets+improve+performance&&view=detail&mid=121EF8A43B4EB6549530121EF8A43B4EB6549530&&FORM=VRDGAR
The article talks about a racquet from the 70's called the "Spaghetti Racquet". The article describes the racquet as having two layers of vertical strings instead of one. The extra strings would make the ball a player hit have a lot of topspin. The more topspin the ball has the higher it bounces when it hits the ground. Apparently the article says an average player could beat a pro with this racquet, so you can see why tennis manufacturers don't make it anymore. ***Hulick, Kathryn. "Engineering the perfect game." Odyssey, July-Aug. 2012, p. 29+. General OneFile, http://link.galegroup.com/apps/doc/A303073031/ITOF?u=j084910011&sid=ITOF&xid=95e3ef5b.
This article talks about how the ITF (International Tennis Federation) had to limit the maximum length of all tennis racquets to twenty-nine inches. The article also explains that certain players said that the racquets that were more than twenty-nine inches improve their performance. The limitation on racquet length was due to a explosion of tennis racquets that were longer than twenty-nine inches being sold. ***"Racquet lengths limited by tennis." Sporting Goods Business, Oct. 1996, p. 8. General OneFile, http://link.galegroup.com/apps/doc/A18972079/ITOF?u=j084910011&sid=ITOF&xid=982cf0c1.