User talk:Derbyfan14

November 2015
Hello, I'm AKS.9955. I wanted to let you know that I undid one or more of your recent contributions to Vertical jump because it did not appear constructive. If you would like to experiment, please use the sandbox. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page.  Arun Kumar SINGH (Talk)  14:14, 6 November 2015 (UTC)