A quick d3.js visualization of the cumulative increase in grand slams by male tennis players. A similar visualization for female tennis grand slam winners can be found here. Data was scraped from wikipedia using this R script.
If I was to invest more time in this, I would certainly improve the tooltip to include more information about tournaments won and nationality. I could also make dots on the line to give more information about the grand slam won (e.g. opponent, score). This quick visualization gives a good impression though of the data trends. Code and data are available here . Please get in touch via twitter - @jalapic