Joe Conley Tagged swingstats Random thoughts on technology, books, golf, and everything else that interests me http://www.josephpconley.com/name/swingstats Equitable Stroke Control <script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script> <script> //latex stuff MathJax.Hub.Config({ tex2jax: { skipTags: ['script', 'noscript', 'style', 'textarea', 'pre'] } }); MathJax.Hub.Queue(function() { var all = MathJax.Hub.getAllJax(), i; for(i=0; i < all.length; i += 1) { all[i].SourceElement().parentNode.className += ' has-jax'; } }); </script> <p>Before <a href="http://www.swingstats.com">SwingStats</a>, I maintained my golf handicap index like most casual golfers, via formulas in an Excel spreadsheet. While effective (though inelegant), it became difficult to manage as the number of rounds and courses increased. Furthermore, I soon learned about Equitable Stroke Control (ESC), a formula which applies net scores to your handicap index, thereby dampening the effects of spectacularly bad holes (a regrettably common occurrence of my game). I didn’t think many golfers were aware of this methodology so I’ll explain it briefly here.</p> <p>To implement ESC for a given round, we need to calculate a <strong>Course Hanidcap</strong> using this formula:</p> <script type="math/tex; mode=display">\text{Course Handicap} = \frac{\text{your handicap index} * \text{slope of course}}{113}</script> <p>If you don’t have an established handicap index yet, you would use the maximum handicap index of 36.4 for men and 40.4 for women.</p> <p>Once you have the course handicap for your round, you can find the maximum score for a given hole using the following table.</p> <table class="ui table striped compact"> <thead> <tr> <th>Course Handicap</th> <th>Maximum Score</th> </tr> </thead> <tbody> <tr> <td>0-9</td> <td>Double Bogey</td> </tr> <tr> <td>10-19</td> <td>7</td> </tr> <tr> <td>20-29</td> <td>8</td> </tr> <tr> <td>30-39</td> <td>9</td> </tr> <tr> <td>40 or more</td> <td>10</td> </tr> </tbody> </table> <p>Using this table, you would go through each hole and determine the net strokes for the hole (the minimum of your score and the maximum score), and add up the net strokes giving you a net total for the round. It is this net total which you should apply towards your handicap calculation. For those interested here’s a good article on <a href="http://golf.about.com/cs/handicapping/a/howcalculated.htm">calculating your own handicap</a>. I won’t go into detail on the handicap calculation as I would simply advise you to use SwingStats!</p> <h2 id="esc-on-swingstats">ESC on SwingStats</h2> <p>SwingStats performs the ESC calculation automatically when generating your handicap. You can see the result for each round by looking at the NET score once your round is saved (in parentheses). Here’s my <a href="http://www.swingstats.com/rounds/405">most recent round</a>, where you can see my raw score of 93 and net score of 92. I earned a net 7 for the second hole as my handicap is 14.9, making the max on any hole a 7.</p> <p><img src="/assets/ESC.bmp" alt="Equitable Score Control Example" /></p> <h2 id="big-data-analysis-for-your-golf-game">Big Data Analysis for your Golf Game</h2> <p>Equitable Score Control is just one of the many benefits of using a scoring system like <a href="http://www.swingstats.com">SwingStats</a>. We’re working on solutions to extract intelligence from our database of rounds to pinpoint areas of your game that need the most work. Check back for future updates, or <a href="http://www.swingstats.com/contact">let us know</a> if you have any requests or feedback!</p> Wed, 30 Jul 2014 00:00:00 +0000 http://www.josephpconley.com/2014/07/30/equitable-score-control.html http://www.josephpconley.com/2014/07/30/equitable-score-control.html Introducing SwingStats <p>SwingStats is a free social golf network, built by and for golfers. We built this application to solve two problems. Firstly, we wanted to help golfers to track their scores and maintain a valid handicap (without needing to belong to a country club). Secondly, we wanted to create a social network to allow golfers to connect and coordinate foursomes and golf outings. We believe providing these solutions helps golfers not only get better at golf but also enjoy the game as well.</p> <p>Our initial release is focused on providing functionality for any golfer to use. Our next major release will focus on providing solutions to golf clubs and golf courses to help them manage their business. We believe that scheduling tee times, running tournaments or outings, and managing promotions can be made simple and effective when run on a platform that any golfer can sign up for and use for free.</p> <p>But don’t worry! We’ll continue to make improvements and updates to the application to give golfers the best experience possible. That’s why we value your feedback. If you have any comments, questions, or feedback, feel free to <a href="http://www.swingstats.com/contact">drop us a line</a></p> Mon, 26 Aug 2013 00:00:00 +0000 http://www.josephpconley.com/2013/08/26/introducing-swingstats.html http://www.josephpconley.com/2013/08/26/introducing-swingstats.html