Tennis Essay

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Tennis is a universal sport. Much like any other sport, tennis has its own unique set of terminology and scoring system. During a match that is broadcasted on TV viewers are usually given an opportunity to see a varying amount statistics. These statistics would the number of aces, first and second serve percentages, number of winners and errors, and so on. The average viewer would only go as far as knowing who won, but these statistics provide a much deeper into many underlying aspects of the match such as how a player won and the chances of winning. Meanwhile, the construction of probability formulas is present due the scoring system being hierarchically structured. For instance, points are gained throughout the service games; these points are which are nested within sets, as well as within the match. Thus, tennis is a game of mathematics that is highly involved with the chances of players winning the match

2. Scoring a Tennis Match
Tennis has a distinctive scoring system that may be confusing for many beginners, or people who are simply unfamiliar with the sport. However, the basic scoring system involves having points required to win games, games required to win sets, and sets required to win the match.
2.1 Games
Scoring for a game typically starts from 0 (love), then as points are earned they will incrementally and respectively become 15, 30, 40 and then game. If both players reach 40 it is referred to as “deuce.” At deuce, whoever wins the next point gets “advantage.” If the player with advantage wins the next point, it will be game; however, if they lose the next point, then they are back to deuce. Throughout the whole game, the server remains constant, and will alternate between games.
(Figure 2.1.1)
This figure is he...

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.... Therefore, the probability of the server winning the game without reaching deuce occurs with probability p^4+ 4p^4 q + 10p^4 q^2= p^4 (1 + 4q + 10q^2 ).
The probability of the score reaching deuce occurs with probability 20 p^3 q^3 (since there are 20 paths that can occur in reaching deuce and each player wins exactly 3 points).
The probability of the server winning the game from deuce:
To win the game from deuce the server needs to win the next two points. This occurs with probabilityp^2. If the server wins the next point from deuce followed by the receiver winning a point, or the receiver wins the next point from deuce followed by the server winning a point, then the score returns to deuce . This occurs with probability 2pq. If d is the probability that the server wins the game when the score is at deuce, then d = p^2+ 2pqd.
Solving for d gives d=p^2/(1-2pq)

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