Florida State Seminoles Official Athletic Site | Men's Tennis
Tennis set betting odds and statistics: Part two
The Next Step to Improvement - Analytics - My Tennis Tools
The ATP Dataset and The Filthy Rich Tennis Players
Match Facts - The Tennis Base
Statistics & Facts on the Tennis Industry | Statista
Tennis Statistics - Apps on Google Play
A list of commonly bought up stats for the Big 3 and who's leading where (readily available in Ultimate Tennis Statistics website if you're interested) : r/tennis