The Effect of Ball Wear on Ball Aerodynamics: An Investigation Using Hawk-Eye Data
The Hawk-Eye electronic line-calling system gives players the ability to challenge line-calling decisions. It also creates large datasets of ball and player movements during competitive play. In this paper we used a dataset taken from 5 years of the Davis and Fed Cup tournaments (comprising 71,019 p...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-02-01
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| Series: | Proceedings |
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| Online Access: | http://www.mdpi.com/2504-3900/2/6/265 |
| _version_ | 1811315182071185408 |
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| author | Simon Choppin Simon Albrecht James Spurr Jamie Capel-Davies |
| author_facet | Simon Choppin Simon Albrecht James Spurr Jamie Capel-Davies |
| author_sort | Simon Choppin |
| collection | DOAJ |
| description | The Hawk-Eye electronic line-calling system gives players the ability to challenge line-calling decisions. It also creates large datasets of ball and player movements during competitive play. In this paper we used a dataset taken from 5 years of the Davis and Fed Cup tournaments (comprising 71,019 points in total) to examine the effect of ball wear on aerodynamic performance. Balls were categorized as new or used depending on whether they were used in the first two games following a ball change (new) or the last two games before a ball change (used). Data falling into neither category was discarded. The coefficients of drag (Cd) of 9224 first serves from the Davis Cup were calculated by simulating their trajectories. New balls had a significantly lower average Cd of 0.579 compared to used balls’ 0.603 (p < 0.0001)—first serves made with new balls arrive 0.0074 s sooner than first serves made with used balls on average. Large sport datasets can be used to explore subtle effects despite a relative lack of precision. |
| first_indexed | 2024-04-13T11:25:37Z |
| format | Article |
| id | doaj.art-a93062473a05426ab482f845903a22bc |
| institution | Directory Open Access Journal |
| issn | 2504-3900 |
| language | English |
| last_indexed | 2024-04-13T11:25:37Z |
| publishDate | 2018-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Proceedings |
| spelling | doaj.art-a93062473a05426ab482f845903a22bc2022-12-22T02:48:42ZengMDPI AGProceedings2504-39002018-02-012626510.3390/proceedings2060265proceedings2060265The Effect of Ball Wear on Ball Aerodynamics: An Investigation Using Hawk-Eye DataSimon Choppin0Simon Albrecht1James Spurr2Jamie Capel-Davies3Centre for Sports Engineering Research, Sheffield Hallam University, Sheffield S10 1TB, UKCentre for Sports Engineering Research, Sheffield Hallam University, Sheffield S10 1TB, UKInternational Tennis Fed, Roehampton, London SW15 5XZ, UKInternational Tennis Fed, Roehampton, London SW15 5XZ, UKThe Hawk-Eye electronic line-calling system gives players the ability to challenge line-calling decisions. It also creates large datasets of ball and player movements during competitive play. In this paper we used a dataset taken from 5 years of the Davis and Fed Cup tournaments (comprising 71,019 points in total) to examine the effect of ball wear on aerodynamic performance. Balls were categorized as new or used depending on whether they were used in the first two games following a ball change (new) or the last two games before a ball change (used). Data falling into neither category was discarded. The coefficients of drag (Cd) of 9224 first serves from the Davis Cup were calculated by simulating their trajectories. New balls had a significantly lower average Cd of 0.579 compared to used balls’ 0.603 (p < 0.0001)—first serves made with new balls arrive 0.0074 s sooner than first serves made with used balls on average. Large sport datasets can be used to explore subtle effects despite a relative lack of precision.http://www.mdpi.com/2504-3900/2/6/265tennisHawk-Eyeaerodynamicsball wear |
| spellingShingle | Simon Choppin Simon Albrecht James Spurr Jamie Capel-Davies The Effect of Ball Wear on Ball Aerodynamics: An Investigation Using Hawk-Eye Data Proceedings tennis Hawk-Eye aerodynamics ball wear |
| title | The Effect of Ball Wear on Ball Aerodynamics: An Investigation Using Hawk-Eye Data |
| title_full | The Effect of Ball Wear on Ball Aerodynamics: An Investigation Using Hawk-Eye Data |
| title_fullStr | The Effect of Ball Wear on Ball Aerodynamics: An Investigation Using Hawk-Eye Data |
| title_full_unstemmed | The Effect of Ball Wear on Ball Aerodynamics: An Investigation Using Hawk-Eye Data |
| title_short | The Effect of Ball Wear on Ball Aerodynamics: An Investigation Using Hawk-Eye Data |
| title_sort | effect of ball wear on ball aerodynamics an investigation using hawk eye data |
| topic | tennis Hawk-Eye aerodynamics ball wear |
| url | http://www.mdpi.com/2504-3900/2/6/265 |
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